Thanks for your help guys. I converted the car to gas for two reasons: I was sick of paying $15 australian for a litre of nitro fuel (nitro fuel is very expensive in Australia) and the engine that I had on the car just recently siezed up.

I am not too bothered about the amount of runtime I will be getting, the .21 engine used to chew through the nitro pretty quickly anyways.

For the body I plan on having either a rollcage or a stadium truck body. I will also be changing the wheels to monster truck ones.