How many parts i.e. steering box, 350ci, 700R4, np208, leafs, steering column, etc. from a 1987 K5 will fit on the frame and body of a 1972 K5? My body is all rusted out and I found a smokin deal on a rust free tub and frame so I see a new project in the future! I am just trying to get an idea on how much work this will be. Thanks.