[Hal Copple]

on the SPF cars, the steel hoop behind the rear bulkhead is right behind the fiberglass, so the lap bracket goes in about an inch, bolts thur, then the part that holds the webbing still protrudes into the cockpit, so the webbing is never in touch with any fiberglass, so it can't cut or abrade. You can adjust the webbing for the rough fit right there, and fine adjust with the belting at the buckle.

I would not want any of my webbing to rub on anything but my own self!