I also vote for the mechanics. When I started working on mine first it was stopping (breaks), going (engine), then cosmetics. as 48bigtrucks said, many of the floor panels can be fabricated saving you a ton of money. I still drive with a few holes in the floor and rusted cab corners. One thing that is important is the cab supports, if rusted bad you may find your cab taking a ride of its own while going around a sharp turn.