It came back to me in sad sad sad shape, we were not nice to it. It was barely a roller, broken body posts, broken front bumper, missing a rear shock, multiple chassis repairs (that are suprisingly strong), beat body, broken roll bar and Daylighters and tires as hard as concrete.
As for upgrades, I got a set of cheapo ball bearings from Amazon, a Tamiya Super Stock RZ motor. Hobbywing 1060 ESC, same knock-off Spektrum-compatible receiver I use everywhere, centered steering servo mod, stainless steel turnbuckles from EspritTech (4-40, 2.5" long that I had to shorten a tiny bit) and Super Blackfoot tires.
The wheels are original Proline upgrade wheels from back then that I dyed black. Obviously, the shocks are also original upgrade shocks that got rebuilt. It also had most of the available transmission/rear drive upgrade parts from Thorpe that I got as a kid (ball diff, dog bone upgrade, aluminum wheel adapters). I had forgotten how cool the machined aluminum wheel adapters were!
For repair parts I used 3D printed body mounts from EBay, front bumper, rollbar and Daylighters from a re-release kit. Also replaced the rod ends and steering balls with NOS parts. I don't know how many of you saw but I also posted a question in the RC10 forum asking about the dimensions of B4 springs that I thought I could use on the front shocks. I ended up shortening the red Traxxas springs that I already had and they're ok, not great but good enough. Luckily, the motor mount was sloppy enough that I could install a 12-tooth pinion in place of the original 11-tooth. I may pop on an adjustable motor mount for it and get the pinion mesh 100% correct.
Other than the new roll bar and lights, the body got cleaned and left alone.
Here's how she started and ended up.