Can tell 28-29 model As from 30-31 easy but have a hard time telling the years apart from each two.Like the 30 31 better with the nice body line down door to fire wall thats more like a 32.The 28-29 body looks more like a T at this point but like them better than Ts.Do any of you have a easy way to tell a 30-31 apart if just the body sheet metal is all you got?