I have an older RS4 RTR3, I got it a while ago for xmas I used to drive it recreationally a bunch but I put it down for a while. I just finally got back into it and Im feeling the need for some speed. It came with the Nitro Star 15Fe engine and I was going to upgrade to the 18ss. I am not sure if the tranny I have is 2 speed, can anyone help me with this? How can I upgrade it to a 2 speed? I think I am also going to get a new pipe. Any suggestions? Any tips and hints are greatly appreciated as I am reletivly new to nitro RC.

THanks