Price: $245.00 (+ core charge if applicable)

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After several years of building Ford V8 Miatas weve developed a few products that are designed to help you through the more difficult portions of the Monster Miata swap process and get your build on the road a little quicker. Running V8 Miatas on the street and track for several years has also lead to us developing some products that increase the reliability of a converted V8 Miata. In addition to the products below we can also aid in finding some of the donor parts required for the build such as used Thunderbird 7.5, limited Slip differentials and Explorer heads and Intakes. We also have a selection of used Mustang and Miata parts in our garage that wed me more than happy to part with...

A bit daunted by the thought of modifying your Mustang harness yourself? Why not have us do it for you?

Modified Conversion Harnesses (V8)

Price: $30.00 ($20 core)

Price: email for details

Trying to find someone who will cut your old Mustang driveshaft down to 30.5? Why not just go with a new one in ALUMINUM.

Product List

To contact us call:


Pre-tapped Ford Thermostat Housings (V8)

Dont feel like buying a M16 tap for just to tap the hole for your Mazda Fan switch? Send it to us!

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Custom ALUMINUM Driveshafts (V8)

To Order email or call the following:




Phone: 267.254.6687



MRM Radiator Cowls for all NA Miatas! (All Miatas)

Cooling is important to ALL Miatas. Why not use a cowl developed for a V8? This is the only radiator cowl that will fit on ABS-equipped Miatas!

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Price: $49.99

TFI Module Relocator Kits for all 80s and 90s Fords

Does your V8 Miata, Mustang, F150 or other 5.0-powered Ford eat TFI modules for lunch? Our relocator kits are the answer to your problem!

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Price: $54.99

Custom Air Conditioning Lines for V8 Miatas!

It gets hot behind the wheel of a V8 Miata. We have a way of keeping you feeling as cool as your car is.

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Price: $175.00




Who is MRM?



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Bored and Sleeved 2.0 Miata bottom ends

We realize while not everyone may want a V8, quite a few folks would like a bit more torque...

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Price: See Product page

McCully Racing Motors

Because two heads are ALWAYS better than one.