Here's my GMC. 1/2 ton 4x4, 350 4 bolt main, 350 turbo, 373 gears,Detroit tru-trak rearend, 33 in BF Goodrich Radial mud TA's with 15 in. Cragers. I bought this in 87 when I lived in Colorado. It didn't have a speck of rust on it until I moved back here to Illinois in 97 (freakin salt). The engine is still stock and runs great.