roll bar vs. roll cage

Anti Submarine belts - or sub belts - are supposed to keep your body from sliding forward/down the seat base and towards the floorpan (and also keep you in place should you end up on your lid). They need to be short and direct with about a 10-15 degree pull rearward. Do not use them with stock seats w/o a pass through stitched in. They'll do very little for you if they're looped over the front edge of the seat.