I have the 84 K-10 my Dad gave me, it has the 454, 4 speed and limited slip differentials front and rear and the 8' box. The frame is in rough shape from rust. I'd like to re-build this truck. I have an 86 suburban that had a diesel with a turbo 400 auto and 4wd, the frame is decent under this. Will this frame interchange with the K-10?. The other option I have is an 82 c-20 frame that I can cut the rear section out of and even use the 3/4 ton rear springs. Can you folks offer some wisdom?