A lot. Everything about those trucks was overbuilt. I looked at one years ago around the same year, beautiful truck that had unfortunately been left in a field after someone poked a rod through the side of the block. It was the exact truck that a buddy's dad had ridden back in the day. But fixing the engine along with the asking price just nixed the deal. That engine is HUGE.
Would never mess up a truck that nice but always thought it would be interesting to find a wreck or rotted out example and use the wheels/axles, engine, other components to build up a low-slung monster rod. Big radiator grill off an old Farmall tractor or KB truck, bullet headlights, butterfly hood, etc. Maybe a big ol IHC KB cab.....
I know one thing as far as the brass goes: you don't want to use your foot to stop the cap for the pump inlet if you're not hanging on when it spins off. Brass is a soft metal, but it's not that soft.