1966 k10 Suburban Axle and Tcase swap advice needed

[snappytravis]

Hello guys, I recently picked up a 66 k10 suburban. It is missing the motor and various axle parts. I am wanting to know if I can either swap a complete 72 frame with auto trans and front and rear axles with disc brakes and power steering setup. Are these frames the same up until 72? Would I be better off to just swap out the axles and trans and t-case? Would it be best to use stock springs from 66 suburban or use the springs from the 72? If I don't use 72 axles what other years will work for this application? Thanks for the advice..