https://www.schrothracing.com/produc...fi-ii-asm#1598
These are DOT approved (due to the buckle design), can be used with a HANS, and can be upgraded to a 5 or 6-point true anti-submarine later. I have these in my car with the Brey Krause R-1155 harness bar and use them with my HANS devices, both driver and passenger.
Yes, I'd rather have the full (NHRA) certified 12-point cage that is in my street / strip drag Firebird. If I end up buying a ZL1 1LE to go along with my SS 1LE late in the year, one of these, probably the SS 1LE, will get caged with two full containment seats, a fire suppression system (in car, underhood, and underneath like my Firebird).