I use the Neu 1515 1.5d/f combined with the Mamba Max in my MBX5T. It is a very powerful, yet drivable setup (I could make it un-drivable with a gearing change). The truggy weighs about 9Lbs., 11oz. This would be a top-notch setup for your Maxx as well.
SCTE and 22T
Lovin' the Barn!
Doing the "League" at DirtBurners!