the traax2 in the vid belongs to mbn member daaboots. there's a little info over there, he didn't do a build thread on that one but i'm sure would hook you up with the info. also metalstudman (he's been "off the grid" awhile) on here has pretty much done essentially what you're working on.
http://www.buggymasters.com/forum/showthread.php?t=1290 .... posts 68 and 69 have pics of two of his setups.