Yes it is a RC truck, I noticed that you are running 4.10 gears and it looks like that is what I need to go to. The T56 has a low gear ratio of 2.66 and a 6th of .50 so I don't quite have the low gear that the automatic has but I have a taller OD. The NV3500 I have now has a low of 4.03 and a OD of around .75. My truck has 3.42 in it now. Do you know how well the powertrax systems hold up and work?