i have a 90 rx-7 GTU, the engine has recently been rebuilt and has 116,000 miles on it. I would like to turbo it but im not quite sure if i should take an old turbo off an old Turbo 2 or buy an aftermarket turbo kit. Has anyone tried this? and if so did you see a great hp increase w/ an aftermarket turbo then w/ the stock turbo? Also if turbo'ing becomes outa the question, what would be a good option for an engine swap to a 20b. I've heard that putting a 20b in the second gen was difficult. Any suggestions would be great. thx

 

For god's sake man, search. This topic has been covered at ad nauseum. It is even in one of the stickys at the top.