Hey guys I have a tmaxx 2.5 with the 3.3 engine on it, I dont know how to tell the difference between the 2 besides the engine....lol.....anyways I heard there is an older model and newer model but I dont know which mine is, It has black trans and plastic, also has the 2 speed with reverse, What I want to know is what all do I need to swap to make it a true 3.3? and what do I need to do to get rid of reverse?