i have a 1988 RX-7 GTU and the whole thing is stock and i love it. i have a hole in the last cat before the pipe and i am upgreading from that (1.7 inch exhaust system to a T2 exhause system. i think i am going from 1.7 to a 2.7 exhaust. waht are the pros and cons to this.?

 

I edited your title because it wasn't descriptive. More people will click on your thread if they know what the subject is about.

Now are you saying you want to switch from your stock n/a exhaust to a stock TII exhaust?

 

depending on where and what u buy they might end up to be the same...i know the walker dynomax catback is the same for t2 and NA applications...