Doing this to mine as we speak. Chassis stripped and parts are in the mail. I'm going with a MMM and 1518 on 6S, thinking a 21t pinion might be best all around cause you can't handle these things over 45 mph anyway. Way to score the 1717 before they went the way of the Dodo bird. Castle just found some more the other day and they were all gone within hours. Surprised you were able to retain the new era roll bar and get the brick to fit in there, coolness.