What is the loudest exhaust that i could get for my g35 coupe 6mt that i could run 2 singles out of a y-pipe...

 

straight pipe with suicide exits. just have your local muffler shop bend you a couple of pipes, weld on some hangers, and you're good to go. tons cheaper than going through a vendor for an exhaust system. It's not just loud, it's obnoxious!

on the (somewhat) legal side, I heard the the Pro-1 and RS*R exhausts are supposed to be pretty loud.