Ive got a whole pile of these rears laying around. They have 3.42 posi's and disc brakes. What is the spline count and width of these rears compared to the 8.5 in a G body? I think theyre 30 spline while ours are 28 or vice versa. I'd love to have rear discs. I can change the spring and control arm mounts pretty easily but I need to know the width of the housing. I know the bolt pattern is different as well.