Update on my issue.
I picked up a parts 216 (badly cracked block) and 235 engine on Friday. Got the 216 disassembled over the weekend. So I have a couple options - using the 216 rods (one is iffy) and crankshaft in my engine, or the crank and rods out of the 235 along with Jerry's suggestion of Buick pistons. That's assuming the parts are in decent shape - drained some water out of the pan, so it may be unusable. It's currently locked up, but I have the cylinders soaking to see if I can get it turning.
Today, I got the front clip off the truck and pulled the engine today in preparation for disassembling it to see what the damage is. Pulling the front clip intact avoided all the alignment issues with unbolting the radiator support. It balances nicely with the spreader bar attached at the fender support brackets with the radiator still in place. Everything came out pretty easily. Only forgot to disconnect the clutch pedal linkage.
