Probably not enough room in the original hangers, spring eyes, and shackles to do so. If you want to you could change all the spring hangers to more modern type that accomidate the soft bushings, that'd be a lot of work for little improvement.
The stock pins and bushings have suited me fine, I'd rebuild/replace and leave them alone.

Grigg


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-