Yeah I've definitely thought about doing the Holden stuff. The only reason I haven't swapped the badges is because the front Pontiac emblem leaves 2 small holes in the front bumper that I would want filled in nicely.
The exterior body modifications look great, but they are quite expensive imo. Here is one of the most common website that sells the Holden body kits:
http://www.jhpss.com/Pontiac-G8/Bodykit.htm
The only other exterior modifications that interest me is the GXP diffuser.
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