Thanks for coming back Ghostrider. Back plate to back plate on the original rear is 52" the new one is 52.25". It's actually a pretty neat package and an easy conversion. The only thing we had to get was new spring purches because they had to be relocated and the drive line had to be shortened 1.25". I think I may have come up with something as good or better than I was looking for. It won't be used as 1 ton (load wise anyway), I'm hoping to use it to pull a Tear Drop Tailer and and carry camping gear.
We also have a '54 1/2 ton short bed and a '56 3/4 ton long bed.
My partner is going to do some changes, fixing etc. now that he is retired. The S10 T5 might go into the 1/2 ton. Then again we might just run it and see what happens. We can always change it later. We have a 270 that might go into the 1 ton or the 3/4 ton.
He does the physical mechanics work and I do the research, find and order stuff, then of course I'm the wrench fetcher, flash light holder etc. I'm learning a lot and absolutely LOVE my 1 ton.

Bettyann