The Stovebolt Site Forums The Parking Lot Big Bolts 31 engine into a 29 1 1/2 ton?

Hi all, I've got a 29 Chevy 1.5 ton International that i'd like to put a 31 engine into. Have any of you done this before? I've got the 31 bell housing with the engine. It looks like I will need to change the transmission too (?). What other changes will I likely need to make? Thanks for sharing your expertise and experiences!