I am wanting to upgrade the rear end on my 1949 Studebaker Truck which is utilizing a complete S-10 chassis and rear end. It is out of a 1982 2wd, with a 7.5" ring gear and 3.08 gear ratio. No posi. I am looking at utilizing a rear end out of a 95-97 2wd with a 8.5" ring gear and 3.42 posi gear ratio. I believe the leaf spring perch's are the same, the axle width is the same and the flanges for mounting my brakes have the same bolt pattern, but am not sure. I am also going to guess that the yolk size and length is probably different on the 2 rear ends which would require a drive line modification. Any help would be appreciated.