Yeah, the gear reduction is next on the list. For now I have a 65 turn crawler motor in it. Much better than the stock 27t motor it came with. I like building almost anything, and these trucks are awesome to build. I have a few HPI gear reductions from my crawlers, but they won't allow the motor to clear the steering and shift servos. I also don't want to stress the gears in the trans that hard. Garden trucking has a nice unit that fastens to the rear of the trans, not the divorced unit that others make for it.The world is yours!