I currently only have the stock 19" rear wheel for my 91' k5. can't fit a very big tire in the swing arm with that! looking at a complete 18" wheel and axle assembly to buy. the one i'm looking to buy is off a 90' k5. wondering if the older wheels will interchange. going to put a paddle on that 19"er and use that badboy @ st. anthony Idaho dunes in late june.