As the other guys said, that particular frame swap would be a mess for most guys to attempt.
I can't see using an S-10 under a Tri 5 truck either. the tread width is way narrower on the S-10.
It might work if you intended to run extremely wide and deep wheels.
Some guys have stuck them under Advanced Design trucks and there is even a kit out but they are using wheel spacers a couple of inches thick to make it work. The S-10 may be a better fit under a 47 and earlier though.
After having a Camaro stub under the 48 I would say go with one of the aftermarket crossmembers with your choice of A arms and spindles.
The biggest problem besides paying for it is having to trim the inner fender wells in a clean manner.
The big problem I had with the subframe job was making the sheet metal line up to suit me.
The truck handled like a slot car, rode great, sat perfect and I drove it 100K miles like that in 5 years.
I think the reason that the Ford guys get away with their frame swaps is that Ford didn't make wholesale changes in the dimensions of their frames.
If you were to put rolling chassis from 55/59, 60/66, 67/72 and 73/87 trucks side by side with out any sheetmetal you would see large differences in the different series. Those differences are in direct relation to the problems you would have with a frame swap.
