Identifying subtle differences in various years?

Hi everyone;

I was wondering if anyone could point out to me (such as a good site) what some of those subtle differences within each generation of the Corvette are, to help identify which year is which? For instance, for my 1975, I know to look for those little bumperettes in the front and back to figure out which is a 1974 or 1975.

But I recently acquired a 2002 Coupe, and I'm finding it's a bit hard to tell the difference from mine and other recent models. I notice mine has a 'molding' strip (if that's the right word) in the center of the door, but I notice some others don't. It seems there are some differences in the tail pipes, too, on recent models.

Can anyone help me out with this?

Thanks!