In my search for new exhaust, what sizes should I be looking at?

 

well depend n/a? s/c? mods? bolt on? custom? could use alittle more infor on the car...the setup...what you wanna do

 

go with 2.5"

 

Stock 2001 Monte Carlo SS. Only mods are tips, dunno size though, and I havent had the chance to get under the car yet. Should I stay 2.5 in and out? I just want it so sound good and loud (but not illegal) and possibly a small increase in HP but i realize not much will come from changing mufflers. Mostly interested in sound.

 

2.5 in the cat and leadingout to 3 to the mufflers a good custum muffler shop can do this it will be loud but not illegal