Just removed the rear from both Gl1000's. Despite the gouge in the '76 wheel I think I'm going to have my new Dunlop 404 mounted on that one. The other wheel is just a bit too dirty, rusty, and has been sitting for far longer, so there are more unknowns as to its integrity.
Update: May 6th. The integrity of the wheel and it's tire is just fine. I went for a spin on it and managed to get a speeding ticket; 69 in a 45. Whoops. New tire is on but the bike will be sitting for a while as some more maintenance needs to be performed. Next thing on the agenda for the GL is the timing belts and valve lash.