RE: -TOP OF THE LINE
I would also recomend the T4 or xxx-t. If they are running some club racing you might get by with the rusty. Like tiger said Its a great lil basher, but if everyone is running some top stuff to get in the mix you might want to look into a purpse built racer. Also stop by there and chat with the racers there to find out some tips, like tires and what not they will be more than happy to help out im sure. Having all the running gear I would suggest going with a Factory Team roller and transfering you gear from the rusty to the new truck.
Good luck