We're doing an engine swap starting this Friday. We'll start by pulling the 5.9 Cummins 6BT engine out of the bus. We'll then pull the (same) engine out of the truck, and we'll install the truck engine in the bus. I'll post pictures and updates here as we go. Wish us luck!
Good luck! Does the truck have a manual transmission or heavier automatic? May be worth putting the whole set-up in your bus while your that deep. I'm assuming the bus has the 545. It's not horrible but also not ideal for road trips/pulling.