What size pipes?
 

Hey, I've been looking at h-pipes and I think I've decided on the Mac offroad Prochamber. My question is should I get the 2.5 inch or the 3 inch? I'm not going to have a poweradder or anything and it will be mainly street driven. So I don't want to sacrifice that much lowend torque. thanks

2.5 inch:)

2.5 good enough for a naturally asspirated stang.