Originally posted by Tony:
I don't believe the rear axle is too wide. I put a 80 Chevy 1/2 ton 4x4 rear axle in my 51,only an inch or so wider than the original, I bet the 70 something axle is the same width as the 80 axle.
The rear axle under my '72 C10 is too wide to go under my '55 1st Suburban. I know axle widths have been different year to year, but I'd suggest measuring carefully before committing to a course of action.