[Trans-Am Jim]

Two points:

Simpson recommends anchoring the shoulder harness at a point 4 inches below the top of the shoulder. They also recommend anchoring the anti-sub belt behind the chest line.

Second, the anti-sub belt's main purpose is to keep the seat belt from riding up when the shoulder belts are tightened. If the seat belt is positioned properly (around the hip, not the waist), the forward movement of the lower body in an accident is taken up by the seat belt, not the anti-sub.

This is taken from a .pdf file produces by Simpson. They used to have it on their website, but no longer. When we inspect a Trans-Am car for proper restrain system mounting, we use Simpson's recommendations, regardless of the belt manufacturer.

If anyone would like a copy of this .pdf, email me and I'll send it to ya.