Everything has worked out fine. I had already picked up a '52 powerglide rearend, mostly for the bendix backing plates. It wasn't the plan but it's now the one getting rebuilt with fresh truck gears. I'm just trying to figure out if the factory intentionally used truck gears for powerglide cars. By the way, I picked up the rearend at Turner's, where I had also picked up a good 261. Just between you and me, he might have a couple left.
-Dan