Yeah, how about some better pics.
I was expecting alot more rust. If nothing else, you have some spare parts.
Perhaps a good spare engine, or one to rebuild for your current ride so when your engine gets tired, you can just drop in the new one.
I've got a line on a couple SOHC's in a guy's back yard. I didn't pursue the details(that would drive me insane if the 750 is something special -"I'd like to sell a kidney please"), but he said there was a 550 and a 750. I have to wait until I have some spare money so I can have cash in hand when I go.
Good find.