Some of my favorite Garcia stuff.
I think it's an SG. In the David and the Dorks shows at the Matrix Garcia was playing an SG (I've seen numerous Picts to this end). The time period would suggest sunburst strat,but I think it's SG.
Cowboy Movie sounds like humbuckers to me.
"And I'm here by the road, tied to the load, that I picked up in ten thousand cafes and bars" - Barlow