A buddy of mine works in a truck garage at a local dealership(big rigs, tri-axles, buses, and fleet pickups mostly). One guy had a 1994 Chevy 2500 4x4 with a 6.5TD. It needed head gaskets. They pulled the head and had found the coolant had "Cavitated" and worn the head so they felt it was junk and needed a new motor. So they parked it outside and there it sits now. He thinks I can pick it up for like between 2-3000. Bluebook is 6 something and it has a REALLY nice utility body I could sell for a good junk of change. But wtf do they mean by this cavitating? I picture mixing and swirling water, did it like sandblast the head? There seems to be scratches there they tried to clean the head up with like a grinder... my thought is just deck the heads a bit and throw them back on. One 6.5 expert in their garage said it would be an easy fix and has no idea why they are junking the truck. I really want a Diesel Chevy(so I can swap a 12V in it without emissions hassle), and a 4x4 since my tow rig now is 2wd. Anyone help me figure this out?