Injector harnesses and leaks around the fuel filter are about the only other thing to add to the list. I had a gen 1 powerstroke, and it ran good in its day. The gen 2 7.3L was even stronger. If its an auto, assume the worst and it'll need one. If it is a stick, make sure it shifts smoothly, and no wannabe truck drivers have been trying to float the gears without using a clutch. Whatever you do, don't consider a 6.oh-no.