sweet, i just installed the GT2 rear 1.5 hubs and the only thing you cant do is make the wheelbase longer or shorter. the parts you need are the gt2 hubs of course and one pair of the larger bearings for the outer hub. i also installed some xtm excellerator cvd axles and are perfect fit with the gt2 hubs . its all about point and click or as some put it on and off switch lol .