I have done a bunch of reading about exhaust systems on the 98-99 SE. My goal is to keep it stealth while increasing the breathing (smaller tip/no coffee can) and keep the noise down a bit. I understand the stock cat flows well so I plan on keeping it. I would like to get a cat back system and maybe a B pipe. Any suggestions? How about a B pipe that is a bolt on? What have you other B14 owners done? What dia is best for N/A cars 2 1/4 or 2 1/2? I don't want to go too big or I am guessing that low end will suffer.