Hey Chris; I may have a parts engine or two if you need parts. I have to get up in the attic and into that foot locker to check, but I think I have some old McCoy rear rotor stuff. I did help out a guy that cam into the hobby shop with something for one of these that he was putting into a restored tether car, but can't remember what it was. Let me know if you need something and I'll check.
Type at you later,
Dan McEntee