Hi all, first up this is a great site. Second is my question, I have an AU XR6 series III VCT Motor and Adaptive shift tranny. It had a sports exhaust when I purchased. What mods give best performance ? I am considering supercharging over turbo for starters. Any advise would be much appreciated.

extractors gearing cold air intake are good and fairly cheap but on the straight 6 the turboing will just make your car boot but at a price u can get second hand turbo kits for the i6 engines for around 2 gs these days
but if ur on a budget extractors and cams are a good mod