I used to run Traxxas UK (RC company for electric and IC models) I have some parts left over from those days, including some gaters, let me have your address and I will send some up to you. We also did an IC model with an auto 2 speed box and reverse (T-Maxx) will try and find some details that...
I used to run Traxxas Uk until retirement around 10 years ago. I retained a load of spare parts including IC engines and bits. If you need anything for experiment with just let me know