I run steering stabilizers adn a 4.5 lift and 35s so I can't really answer, but if its a 7.3 it should ahve the OEM steering stabilizer I believe, so may just need a new shock. Oilpan, hm, mine leaks a tad of oil in my 6.0 but not from the oil pan, and very little, like no drips on drive, more like burns a little.... I can't answer that, I am sure it's fixible, maybe just new gasket, pan, and bolt. Actually maybe the bolt doesn't have the crush washer. Mine didnt when I got it from the dealer. Drivetrain, not that I know of. One of the best drive trains in diesels that I've read of. V10, my neighbor has a 250 and Excursion both with that and I don't get it. The mpb has to be god awful, and they sound like sh*t with exhaust, at least his do.