• 2016 - 2023 models only (2016 - 2018 are preferable)

• Native manual transmission car only

• No history of front end collision damage

• No flood damage cars

• Highly modified cars are discouraged, especially if the wiring has been messed with

• High mileage cars are discouraged, 40k-50k miles is the sweet spot in terms of price while remaining in excellent condition

• LHD North American cars only. Sorry blokes!

The “hot cam” cars measure approximately 489rwhp and 462rwtq.

Standard LS3 cam cars measure approximately 412rwhp and 414rwtq.

This is on pump 93 octane premium gas. Nothing exotic. Just fill up and go.

We don’t know, and we don’t care….

Neither will you the first time you get behind the wheel and drive.

Each car will be slightly different obviously, but our black RF test car weighed in at 2790lbs with a full tank of fuel.

A client’s Soft-Top car with an aftermarket steel roll-bar weighed in at 2730lbs with a full tank of fuel.

As shocking as this is to believe, it does not compromise the weight balance and handling at all…seriously.

While the car does gain a couple hundred of pounds or so, the weight is evenly distributed as there is significant additional steel bracing added to the rear subframe as well as the flimsy aluminum Mazda frame rail braces are replaced by a much stouter steel box-tube 6-point frame-rail brace (see photo).

The majority of the weight being added is not the all-aluminum engine. Rather it is the transmission, rear differential assembly, the much beefier axles, and the additional bracing.

It still weighs less than a (FD) RX-7, and we don’t hear anyone complaining about those being too heavy.

When we corner balanced the black RF test car, it came in right at 52/48 Front/Rear weight balance. The soft-top with an aftermarket steel roll-bar came in at 53/47, Front/Rear.

What you will notice, only if you have driven the ND Miata at the edge before, is that the car feels heavier and beefier than the 4-cylinder car, but the handling dynamics are still the same. See this video for track impressions from a former spec-Miata racer.

The purchaser’s agreement stipulates that everything removed from the car as part of the conversion process becomes our property. The engine, wheels, tires, differential, steering rack, even the shift knob….anything that is removed from the car as part of the conversion process stays behind.

Sorry, but no. The car is built as a complete package. There is very little that can be left out without negatively impacting the driving & ownership experience and we are banking our reputation on that experience.

Sorry, but we do not use/install customer-supplied parts for any of our builds.

Everything used to build the car is new with the exception of the rear differential. They are no longer available from GM. So we source used differentials and then rebuild the internals entirely with new GM and aftermarket parts. In the end, only the differential case is used

Sorry, but no. It doesn’t fit. It is significantly bigger than the LS3.

Unfortunately not at this time. The R&D has not been done yet to reconcile the various differences between the 124 and the MX-5.

We’d love to, but unfortunately the Chrysler/Stellantis V8’s are too big and won’t fit. The cylinder heads are too wide.

Sorry, but no. Yes, it is possible and it has been done. It makes the build significantly more complicated with very little upside when it comes to actually driving the car and lots of downsides.

The “hot cam” option is an additional cost.

If you wish to add the OEM appearance package items to your donor car, that is an additional cost.

Soft-top cars may be fitted with upgraded roll-over protection at an additional cost.

If you plan on attending recreational track days, then you need to find out from your preferred track day organizer what their requirements are when it comes to roll-over protection on convertibles.

The only cosmetic body piece that is part of the conversion is the rear valence which accommodates the center-exit exhaust.

The front splitter and side-skirts seen on the black RF are Mazda OEM and part of an optional appearance package from the factory. Some cars will already have them, some won’t. If the car doesn’t already have them to begin with, then adding them to the car will be an extra cost. They come in gloss black, so there is no paintwork involved. You would simply be paying for the parts and time to install.

Any body pieces other than the rear valence would be an extra cost. We strongly recommend you stick with the Mazda parts since they come in gloss black already to match the rear valence and other gloss black accents found on some donor cars.

Yes. This is an optional add-on that is only available for RF donor cars.

There is only one build option: Standard OEM LS3 camshaft or a “hot cam”. Our black RF promo car you may have seen on YouTube has a hot cam.

While the hot cam does moderately bump up power output across the rev range without ruining low-end drivability, increasing the engine power output isn’t the point of it.

The real purpose of it is to make the driving experience feel much more old school, raw, and fun. Therefore, it is a very easy camshaft to live with in normal street driving, but still gives you some fun “chop”.

Small add-ons like radar detectors, dashcams, etc…that do not compromise the integrity of the overall car and which can easily be installed “while we are in there”….are perfectly fine.

Sorry, but no. We do not install customer supplied parts in place of anything on the standard build sheet.

We’re pretty sure. Everyone says the same thing until they drive the car, and then they are astonished by how much grip the car has. The Falken RT660’s are the absolute best dry performance tire you can buy short of some really expensive Michelins.

Absolutely not. Zero chance.

The short answer is we do not know. State laws vary from state to state and can even vary from county to county when it comes to emissions testing.

We can tell you for sure you can register this car no problem in Florida, but you’ll have to investigate your particular state yourself. If your state requires the car to be CARB-compliant, then you will need to register it somewhere else.

During the conversion process the following systems are rendered inoperable on every car:

• Stability Control

• Traction Control

• Cruise Control

• Windshield washer fluid

Over the years Mazda keeps adding more nannies and electronic systems to various trim levels. Some of these systems are also rendered inoperable such as the forward looking camera and lane departure system. If you really need all that stuff, this probably isn’t the car for you.

Traditional features like power steering, air conditioning…those are all still in place and function, as does the Mazda infotainment system and even the digital instrument cluster display.

Please do…and please tell us in advance. We will work with you and your expectations to tailor the car to best suit how you are going to use it. To be honest it is already about 90-95% ready to hit the track, but you will certainly want higher temperature brake pads and possibly retain the stock rear swaybar, depending on your driving preferences. The car otherwise is setup to keep the average driver out of trouble.

Not at the moment. It is on the to-do list, but for now if you don’t need/want the street-friendly gear because this car will live at the track and travel on a trailer, we can work with you to accommodate hard track usage.

Sorry, but no. None of that will fit without major cutting and reworking of the chassis and body. Trust us...nobody has ever gotten out of this car and said “it needs more power”. As-is this car is a very very very finely threaded needle. There is very little wiggle room for getting outside the box with the powertrain.