here you are big ass:
This is a set of two Pro-Line Trencher SC 2.2/3.0 Short Course Truck Tires in M2 Compound. You will never tread lightly with your Short Course (SC) Truck again with Pro-Line’s Trencher SC tires. The Trencher tires are designed to give your short course truck optimal traction on just about any surface. Realistic shaped treads give your short course truck a scale look while offering ridiculous amounts of forward bite. The tall tread will also offer traction in many different terrains and deliver durability, second to none.
540 rotor is too short for mod1 pinion , i'm going to add a metal motor plate between it and move the rotor a little bit backward , so the pinion can attached at the flat area of rotor.......now is attached at the round head rotor and i worry it might loose