It's back together! Wow, that's tough to work with. I could fit half my hand between the gas tank and the engine, basically my fingers. I backed the truck up to the ski so I could lay on the tailgate and be right in the engine compartment. My 10 year old lifted the shaft assembly from the back and we spent quite a while guessing until finally it dropped into place. Then we put things back together and got the driveshaft back in.
The only thing off now is the seat. I believe I have the dreaded gray fuel lines, and the fuel gauge doesn't work, so now's the time to tackle those two things.