My cousin wants to swap the axles from his rustbucket 1984 Chevy K20 into a pretty nice 1986 Chevy K10 he just bought. The 3/4T has a D44 front and a 9.5 SF 14-bolt rear. The 1/2T has D44 front and 10-bolt rear. Both trucks are regular cab long beds and have stock suspension components, drivelines and auto trannys, although I am not sure which auto trannys they have or which T-Case they have. Can we swap springs as well? I think that would make the job a lot easier overall. I don't know if the springs are the same length/width since he hasn't brought the K10 home yet. Also, will the 1/2T truck driveshaft u-joints mate up with the 3/4T pinions? Thanks for any advice.