Frame wise, you can use an e1 or e2 just by bolting them on and plugging in the board to the valve. I believe you can use the selectfire as well but it does not have the options for dwell and such settings. You can also use modified mechanical frames(ex:http://www.mcarterbrown.com/forums/c...tml#post349534
). Ego Star frames will work but need some modifications to be made to the frame in order for it to fit. There are probably more but these are the most popular choices. Many boards on other guns work as well(like ions) but you have to find a way to mount the frame or to switch the board out into another frame.