Hi Colin,
I have a 1948 Chevy PU, that I plan to pull the center section and replace with the 55 GMC pumpkin I have, and also replace the brake backing plates to upgrade to bendix brakes, and ditch the hucks, weld the perches and that is all I plan on doing. If you want to move your axle back a bit to center it in the wheel well, then you can remove the pivot apparatus, and weld on some new spring perches. Then have a driveline made, oh and you will need the back bearing retainer and output shaft for the new driveline. But that is personal preference.
Hope this helps, Garry K
