Engine Swap Of The Day: NASCAR-Spec Chevy Small-Block In Mazda RX-7

We're not saying we don't like the Mazda Rotary, but it's hard to say anything bad about an RX-7 that can spin the tires in fourth gear. Jack Baruth, aka ViergangFuchs, ran across this 543-horse beast when he stopped by Matt “Tinman” Johnston's shop to pick up his new NASA Neon ACR (the previous one having been garbooned in an unfortunate car-versus-wall encounter) and gave it his unreserved stamp of approval.

[Autofiends]