hey i was going to do the same coz i picked up a 16 for cheap. but the thing u really want to do is change the suspension front (for later model se/sp) and rear(not sure what would fit) the 16 suspensin is pretty poor. guessing u are not to serious a racer like myself. ended up getting a 21 frame for cheap and am busy poaring money into that. hope u have fun building it.