Hey, I just purchased a low mile (28000 original) one owner 1963 GMC 960, V8/4spd, 2spd rear, Dayton wheels, Good Brakes, runs/drives nice, was last safetied & registered in 2005...has original Power steering and power brakes, which I think are rare options in these (please correct me if I'm wrong) also has Chrome Grille & Bumper, Mico brake Lock, PTO, Dual Gas Tanks, 23000 GVW....it also has the straight front axle, not independent torsion bar front suspension (like my 63 GMC Bus) Not sure how to post a pic here, but will try....still not sure how to post pics....my questions are 1. Has anyone swapped in 80's GM P30 straight front & rear axles?...I also have mid 90's GM 3500HD front and rear axles.....I'm also considering Swapping in a NV4500 5 speed overdrive trans, from the 3500HD...I'm not looking to work it too hard or anything, just going to be pulling my 2 car trailer (40ft) or 36 foot camper trailer....