[Espeefan]

Joe, perhaps another option would be to get yourself a regular truck axle, and get a new gearhead motor that could couple directly to the input shaft of the axle. If you bolted it right up to the axle and coupled the output shaft of the gearmotor to the input shaft of the axle, maybe that would work okay. The axle could be rotated or clocked straight up, and the motor could be standing on top of the axle, or layed the axle down flat and the motor could sit in the belly of the model. Just another idea!