The best thing you could do is upgrede it to a Rustler. [link=http://www.traxxas.com/support/index.php?action=artikel&cat=136&id=405&highlight= Convert%20sport]CLICK[/link]

As for the servo I would take this one. [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXVW07&P=ML]CLICK[/link]

Then you can upgrede the top deck of the Rustler to aluminum. (the picture is supposed to be the blue version) [link=http://www.neweramodels.com/cgi-bin/item.cgi?session_id=&part_id=3058]CLICK[/link]