Just for power, seems people are making more HP with the 3" single Corsa exhaust. I undestand it also sounds very good. Contrary to early belief the OEM GTO exhaust is a bit restrictive in parts and power can be found in the aftermarket. I'm going to go with full length headers, random tech cats and undecided on which exhaust system to go with. One thing is for sure, I'm keeping all my exits on one side like stock because it's unique on a V8 dual exhaust.Scissors said:Who'd want to? The stock exhaust is SWEET!