[1795]

Some race organizations are moving away from SFI and towards FIA belts as the FIA belts are good for 5 years as opposed to the SFI needing to be replaced every two years. Vintage groups have tended to overlook this previously, but are getting more strict with belts being out of date. My shoulder harness belts are both secured to the cross bar welded between the hoop legs. For the passenger you would need to find a secure point for the shoulder straps. Do not have the securing points too far apart from each other. You want the retention points to be close enough together that the straps some alongside the neck and not out towards the end of the shoulders, where they might slip off the shoulders.