Any have any experiance with these belts? they look like they bolt to the floor. Is that safe? Even with a racing seat i am curious.

http://wescoperformance.stores.yahoo.net/am4point.html

Our 4 point seat belts are universal to all makes and model vehicles and are labeled Federal Safety Standard approved #209 & #302! These four point seat belts are perfect for the middle seat position of bench seats providing shoulder harness restraints where none were available before. Although referred to as four point seatbelts because there are 2 shoulder straps, they actually have only 3 anchor points. (Click on the installation link below to view.) Also great for use of infant seats in the middle position that require a shoulder harness strap. For bucket seat installations, this seatbelt is best used with bucket seats with adjustable headrest (not where headrest and seat are all one piece). Seat belts work in either driver, passenger or middle position in your car, truck or van. Price includes 1 restraint. These floor mount 4 point belts with 2 inch shoulder harness which are retrofit products and are not original manufacturer's equipment.

 

Not sure about the safety but I bet no sanctioned racing event would accept them. They look like they are designed to keep your child in the center back seat, not for racing your car. Go to the true 4 point harness, cost a little more but designed for racing applications