So you have four HD-8s, not just one? I'm guessing you have most of the parts to get one into really good shape, and have a life-time supply of most spares for it. You'll probably be swamped by people who want to buy odd bits from you, too. If you handle things well, you may be able to do swaps, for bits you need yourself.
Thanks for letting us know where Bob's HD-8s went - now we don't have to wonder any more, and people looking for spares will know who to negotiate with.
