Hi, Stillen. yeah this site is pretty quiet at times. There is quite an aftermarket for teh G8, I think you might be surprised. Having been sold already for two years as the Holden VE Commodore there are several companies from Oz with NA networks selling suspension, exhaust, even a full front makeover to change a G8 into a Holden. You can find several of them on 'our' (same owners) big board
www.g8board.com