www.maximummotorsports.com
i would suggest a 6 point, simply because it will provide signifigant chasis stiffening, a 4 point will do little. if you don't want to have to climb over the bars, then get a 4 point, at the track i go to (as well as most others) if you have a vert and run faster than 13.99, you have to have a helmet and 4 point.