I'm looking at buying a 1st gen pickup. I'm leaning towards a K20 w/manual trans. Are there any differences in the frame between a K20 and a K10. I deffinately want a 14FF out back but when did GM start putting D60's up front. This is not a necessity but it would be nice. What are some things to look out for? I'm going to use this truck as a daily driver/weekend toy. Something like a 4" lift and 35" A/T or M/T tires nothing extreme, so I would like to find a clean, rust free truck that has had most of the work done to it.