http://www.hotwheels.com/us/product....tegory_id=7625
hope that link works. but the "bit rig" is a hotwheels. its pretty heavy, but that helps out the front steering out. the wheels of the cab are a good match to the bit wheels. to add the third axle with the trailer attachment, i connected thru the 2 holes under the motor. a paint job will come soon. im thinking optimus prime
to attach, i filed a slot in the front grille like a bit. between the mufflers are the gas cans. i filed out a slot in the cans to hold the cab in place, with the help of a couple extra steering magnets to hold the cab down. it assembles/disassembles pretty easily for storage. ill try to take pics later without the cab on.
the next "bit rig" is going to be a longnose.
and yes i have a mario. they have these extra wheel wheels that go over the regular rims, im pretty sure is to make it look like a cart, but they help keep mario from flipping.