When I started my deuce tractor project, the truck was a mess cosmetically! I believe this truck was over seas and must have gotten too close to some oil well fires, or a platoon of soldiers jumped up and down and kicked it with their boots on!
There was to say the least a lot of warped and dented sheet metal! When the truck was painted tan, from green, it obviously wasn't cleaned properly, especially underneath, where there was about 10 mills thick of paint peeling off everywhere! I spent countless hours addressing this, they even painted the steering wheel! So after scraping, chipping, sanding and several pressure washes and primer later, I painted with galespi thinned with laquor thinner, everything turned out beautiful!
But note,I started out spraying the cab interior with behr exterior, it turned out ok but,I found it hard to deal with due to the time of year and cure time, so I jumped ship and used something faster.