Found a 1988 K2500 with six lug 14 bolt rearend but it is 3.73 gears instead of my 3.42s I think I'm buying it and the front differential. I think the 3.73s will be a better match for my 33-12.50 tires anyway. Also found a 1995 K2500 with eight lug wheels and 4.10s I almost bit the bullet...