Hi, I have just got a VT Calais with a
HSV 195kw 5L in it, but thay sound real quiet stock standard like a V6

. I have decided to put a cat back system on for now till my budget can get pacemaker headers later on. For now i just want a cat back sys that will make it sound nice and load with a good note

. I rang around and some people say single 2.5inch and some say 3inch, what do you guys think and what brands.
BTW are the stock hsv headers good enough or go the pacemakers?