Dogbone,
from the 04 to the 08. the rear geometry is the same but they sell an upgrade to change the roll center, we just don't have enough traction to use it. the front changes a lot, the 04 had the Comp style from end and they changed to the shorter bulkheads, shocks, springs and the flat C/F plate. for racing we use in-line hubs and not the off-set ones provided on the 04 kit. not sure which one are supplied on the 08.
thanks,

Vspeed