All miatas are rwd. I like the idea of that much power in a miata but you would never be able to make any money of the car racing on the streets. The car wouldn't idle like a 4cly and word would get out quick that it has that much power. the car would be scary fast but a better choice is to put whats called an FE-DOHC into on.
The car is still a 4cyl only it is now turbo and has a much better motor than the BP that was orgianly housed in it.
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