i tried that with my 3 port race spec. i tried to use a headbutton from a RB CONCEPTS 5port l2g with stander plug, i found that the standerd head button was too thick, it measured (i think ) .030 thicker than the turbo plug head button. so i wouldnt use it that head button unless it was ground down to the same size,(or thickness) as the turbo head. but i bet the head button from the 3 port sport motor with the blue head from go-tech would work? I AM NOT A RC CAR MOTOR BUILDER. SO PLEASE SEEK THE WORD FROM A PRO, OR ASK THE BRAIN FROM PRO TWISTER MOD FORUMS FOR A better ANSWER. hey man where do u race at? i race at Redline Raceway.