My first car was a 1975 Datsun 620 pickup. My brother bought it for body parts to fix his '77 after he rearended a 4-runner. He sold the rest to me for $75. I took his old parts and straigtened them up and put them back on my truck. Drove it for a couple months until I could afford a rebuild kit for the engine at $75. Did a quick driveway in-frame refurb (didnt measure anything, just removed old rings and bushings and replaced with standard sized parts, new gaskets and slapped it back together) and drove the crap out of it for a couple years. Pick a color and it probably had it on the body somewhere, rust and bondo included.
Ugly, but I sure miss that old truck!