Pull the drive train and mount it on your welded up frame then attach a generator /welder + pressure washer pump + air compressor for a go any where power station / repair vehicle / tool box. (Better add an ice box cooled by the factory AC). Frame mount a hydraulic lever to use as a field jack. Add some kind of tire changer and an anvil and a vise and a chop saw. Ultimate work platform / mule / self propelled field work bench. Oh yeah... and a pto winch.
Put a deck in front of / under it and have the first air conditioned lawn mower on the block.
Use the drive train to build a half scale replica Duce and a half or Sherman tank.
Drive train + welded frame + compressor + big air tank + 12' long 14" dia PVC pipe = self propelled pumpkin artillery cannon. Add a second 4" barrel for a water balloon barrage.
Log hauler for your saw mill. Skidder.
Fork lift.
Mini mud truck.
Chipper.
Hovercraft.
Boom man lift for painting the house, trimming trees.
Self propelled BBQ / Texas smoker.