I've never measured the width on the fords, but I did help a guy do one with the Dodge rear. It fit very well. The only thing we had to do was swap the spring plates, not really a big deal. We used a dual size U-joint to adapt it to the driveshaft, but I'm certain that one could get a yoke that would match the Chevy joint caps. As I said, though, alot of those vans, especially the 3/4 tons, are semi float, so you will give up some strength useng one of those. Won't be much of an issue if you're not planning to haul anything extremely heavy. Be just fine for a driver.
If you can find one of the 4.11 3rd members from the '67-'72 3/4 ton, it will be a simple bolt in, and will look 100% stock.
