The 7 port is the way to go on buggy. I have been consistently finishing 1st in the Amain with the 7 port used on a truggy, but I think it is more because the bottom end is nice and linear, so I am putting all the HP to the track. The top end on the 7 port with an 053 is insane. Nobody, including $600 modified motors can pull me down the straights.