My current project is a 91 crx si, at the moment it has a mini me (d16a6 with Y8 head) so I built a 2.25 exhaust for it. Anyway, I was thinking about going LSvtec or even a b20vtec but was wondering about the exhaust. Is 2.25 to small for a b20vtec (or ls/vtec)? It is all mandrel bent and is very quite so I wouldn't might keeping it for the swap. Do you guys think this exhaust would be good enough or go 2.5? The car is my daily so I'm trying to keep it stock sounding.