I agree i usually buy the muffler i like, have them bend and fab some pipes and they weld it on. I've done it about 3 times and each time it cost me no more than $300 for everything. You don't see very substaintial gains from a low modded street car anyway. Why spend 6 or 7 hundred bucks when you're talking about 2 or 3 whp? You could lose that much hp turning on your a/c. Now if you're talking about doing some crazy mods above 250 whp you might want to spend the extra $300 on something with good bends. I use the extra $$$ to buy some suspension parts or a set of cams something that'll give me more bang for my buck. Exhaust components are all about status do you want people to go HOLY SH*T he's got a stainless exhaust or HOLY SH*T he just smoked me.