Being a owner of a coach of that vintage I would be leery of a few things you mentioned. That's some really hard parts to have replaced on a rig with 76k on the clock. Driveshaft/kingpin? Does not sound like it was only driven to church on Sunday. Check and make sure the body is connected to the frame at the floor level. Has the roof had 500 zink screws run through it. Has it spent its life on the coast? Be aware non slide coaches have a really low value. If it was me I would probably start in the 9k range. Keeping one of these old rigs up and in road ready shape ain't for the faint of heart and that's no bs. Joe.