I was looking at the spec's page and noticed that when the K5 was introduced in 1969, it weighed a scant 2900 some pounds. 20 years later, the K5 seems to have filled out a little and tipped the scales at an astounding 4878 pounds! /forums/images/graemlins/eek.gif From what I can tell, there were really only three major changes. 1: No more full fiberglass top, now the K5 has a steel half-cab. (Adds weight). 2: Standard for the '89 model is chevy's famous 350 V8 vs the standard 250 c.i. I6 in '69. (Also adds weight). 3: Now here is the kicker, in '69 the K5 came with a GM 12bolt in the rear and a Dana 44 in the front. In '89, out go the heavy 3/4 ton axles, and in go the lighter GM 10bolt 1/2 ton axles, front and rear. So where do all those extra 1900 pounds come from? /forums/images/graemlins/dunno.gif If anybody knows, I'd be really curious to find out.