are u guys upgrading yur rx7's for drag or drift? the high compression NA from 91 rx7's are made with same horse power as the turbo! very bad idea to slap on a turbo. it is already high compressioned rotors. slap on turbo's are only good for 1986 to 1988 rx7 NA... it is IDEAL to just swap from NA to a T2 Motor that way u wont blow up yur high compressioned engine. (i wish i have that high compressioned engine in my rx7) ATTENTION!! : PLSS! DO NOT SWAP A v8 INTO AN RX-7!!" TRUST ME..SWAPING A V8 TO A '7 = MONEY+ MONEY+ MONEY+ TIME+ TIME+WORK+WORK...NOT ONLY THAT BUT IT IS A RIDICULOUS IDEA!...IT IS POSSIBLE BUT IT IS NOT WORTH IT. WHY PUT A V8 ON AN RX7 (IT'S A PERFECT MACHINE) IF U WANT V8 POWER...SWAP A 20B MOTOR..U CAN ORDER IT FROM JAPAN OR AUSTRALIA...20b motors produce 320hp stock! and can produce more over 400 if tuned right...("an NA 20B" or a turbo 20B) with this motor tuned right, it can beat mustang, corvette, camaro! why? because 20b motors have "3 ROTORS"... believe it! as for the rear end.. buy an after market one or use a T2 rear end if want to swap to a turbo motor. also the T2 tranny is "IDEAL". do u all want yur turbo motors to last long? here's an advice: warm up the car 5 minutes, after driving idle the car for 5 minutes, then shut it off...turbo timer it! why? so u won't carbon lock yur turbo engine...same goes for piston turbo engines....baby the rx 7 for it is a perfect machine...thnks for the time reading and learning my advice..