I have a 68 gmc suburban with a bad np203 and a dana 44 closed knuckle front and gm 12 bolt rear with drum breaks in front and rear. I want to change my front to a open knuckle 44 with disk brakes and the rear will need to be changed to because the case is cracked and I want disk brakes in the rear as well. The motor is a 327 with 350 turbo. So my question is can I just get a 75 suburban with a 350 ci and 350 turbo, 4x4 and take the np205 and front dana 44 and dana 60 rear end and bolt them up with out have to change spline count. I belive my 68 is 27 spline. I plan on 37" tires with a 8 in lift