I HATE rust! Especially after you've done all that work and spent all that money for a paint job, to have rust pop thru the surface 3 months later. So I'd suggest keeping an eye on the swap meet, and finding a cab that has minimal rust. A cab will fit in the back a pickup, and maybe on a long weekend you could find a cab out of your area thats in better shape plus extra parts and haul it home. I have two 54 cabs and a floor left over from doner trucks.