Originally, I wanted to head down the v8 path. Page one of the build guide talked me out of it.
Disclaimers
Please don't skim over this section.
Let’s face it, the end goal of this project is to turn a reasonable, perfectly innocent Miata into something that might be slightly safer than a motorcycle. To take on a project like this, you need to be a certain kind of crazy. We at Exomotive live for this sort of crazy, but there’s no reason to take unnecessary risks in any step of the process.
Let’s get this out of the way right now: if you’re adding forced induction or a V8 swap into the mix, get some driver training. Seriously, we’re past the marketing speech here: a turbo and/or V8 Exocet is seriously, terrifyingly fast. It is faster than most road course racecars. It is faster than your friend’s buddy’s neighbor’s back-halved 600hp Camaro. With just an FMII bolt-on turbo kit and no internal mods, our own XP-3 has the same power-to-weight as a Ferrari Enzo and most liter-bikes. To put that in perspective, that’s like driving a new Mustang GT with 800 hp.1500lbs is crazy-light, and a little power goes a long way. The Exocet is inherently very easy to drive, but the power-to-weight levels of even a turbocharged 1.8 makes driving one of these things a special experience. Some of you are planning 500+hp LSx builds. Please be careful, and understand what you’re getting into.