Like the other guys said, Mar-K and Steele are good, but they don't have a lot for the AD trucks. If you do a complete rebuild, be very careful with everything you take off. Label everything- get a plastic case/organizer for nuts and bolts and label them. A small part that looks very worn out, like a door latch is tempting to throw out, but don't! You'd be surprised at the small parts you can re-use, repair and rebuild, because it is still a better way to go than using chinese parts.
