i just put a SBF/tremec set up in my 1991 rx-7. It fits decently, but kinda sticks out of the hood. The car runs very strong, and I have already broke the factory rear. But not to fear, I got a turbo II LSD today, so hopefully it will hold that 400hp, 450ftlbs+ beast!! and yes stangerang, that's what the rx-7 is made for. The rotary engine was a great idea on paper. stock engine perf. #'s 160hp, 140ftlbs WTF, those are great #'s for a 400lb bike.