I'd look into it even if I had an 08.
GM made changes, not necessarily by year. They made the changes more by when they ran out of a part in stock. The transmission is a perfect example. I've seen a 2003 car where the transmission didn't have the hardened 4th clutch hub. Why I'm not fully sure of.. it has production date of Nov 2002, but was a 2003 model. Which leaves the question out there.. is it 2003's built in 2003 that got the shaft or was it after GM ran out of the non-hardened ones? I'd bank on the latter.
