Yes, hardly anything is the same. I think just about the only thing that hasn't changed is the wheelbase. Also from what I have heard Gambler doesn't even exist anymore.
Knowing it's going to be a reissue will probably knock the model off my short list. The model show I went to last week had the sprint cars in the 10-15 dollar range. So paying double just for some new decals isn't all that appealing to me.