Bushings, "friction shocks," worn-out tires, cracked body painted on the outside. I didn't even open up the gearbox; just spun it to make sure it turned smoothly. Seems OK.
Still needs guts. I think it will get the ancient Futaba receiver and MC-112 that were in the GP-10. They seem basically functional.
Somebody really liked going up and down curbs...
Will try running it this weekend. If it does all right, it may live in the trunk of my car, just for knocking around when I have time.