Im not sure on the sway bars, but I know the shocks are different, the upper deck, not sure what else. Kyosho did offer a evo conversion kit but I think It was way over priced, like 200.00. I would just drive the rrr wce and not worry about upgrading to evo, I have heard they are about dead equal on the track. Also I see the evo 2 is coming out now