I was wondering what differents it would make performance and sound wise to a N/A V6 I know that it blots straight on Because i know where i can get one cheap
ummm im sure they bolt straight on. I have a twin on mine, bolted straight up.
OP - the headers are bigger, but im pretty sure it wont make a massive sound difference. If its noise you seek, cat back system for like $250 will see it noisey
I was under the impression that the only difference was changing the header length. Shorter for the standard L36 system so you can put a Y-piece in there to put a single cat, otherwise leave the length alone and bolt twin cats up.
i rang holden and they said that its the same as the v8 only difference is that the header pipes have the o2 sensor moved up to the header itself when on the v8 its at the cat but they said as long as you get the super6 system or it will not fit as the header pipe are also shaped differently