We wanted to replace our O.E.M. gut-ripper seatbelts with a JAZ SFI-approved four-point restraint system. The two JAZ lap belts bolt to the floor using the stock floor-mounted seatbelt bolt holes. However, to mount the shoulder harness portion of the restraint system we needed to weld on these special tabs (shown). JAZ Products has a variety of different tab sizes/styles, or you can hand-fabricate tabs if you so desire.