This is a 42% scaled down very rough remix to allow you to mount this body (well, parts of it anyhow) onto a Tamiya tank base (the wooden plank variety. I have a dual gearbox on mine running 3 road wheels, one sprocket and one return per side (no idlers). This fits exactly over the gearbox. The nose should extend past the end of the base as should the rear. You will need to drill 2 holes in the main body to pass the return wheels' axle through. My tank is being run by an Arduino Uno. I include a horribly done, but adequate PING sensor mount to go on its spine. Remember....this is rough. I cleaned up a lot with some sanding and filling and it's looking pretty good.
Update 4/25/2016: It's been running great and I uploaded pictures. I have TinySine board providing BT connectivity and the tank is controlled from my phone. The hump in the photos is a battery pack of 2 9v batteries but I have since converted to a pair of 12v batteries with a much smaller profile.
Update 07/17/2014: Redid the body to reflect changes based on the original. V2 has a pod on its back to accommodate an Arduino Nano and a 2 motor shield. The PING sensor mount goes in front and is glued. The little 'door' then seals the pod with 4 small screws. The rear panel encloses the gearbox and battery (battery in the nose, gearbox in the back. Then run your wiring and voila. Haven't printed it yet, but it should work with a little cleanup of the body (some minor sanding to correct small errors not worth chasing down).