If you are going to use these for protection / safety, please reinstall the anti-sub straps to the same connection points as the lap belts, lay them over your seat, sit on them and then bring them up between your legs - and I hate to say this - like a diaper. Having them drape around the front of your seat is improper installation and will not help with submarining, nor will they hold you in your seat for spirited driving. Also - they will not pass tech at a HPDE event.
Belts are great - but only if installed properly.
I agree 100%. As an ICSCC tech inspector, and a past SCCA tech, there is NO WAY that you should install a long-loop of webbing that far in front of your body, for your body to slide into. The "Anti-Submarine" portion of a race harness is intended to keep your out-of-control body from going under the lap belts, and under the steering wheel and under instrument panel. To do this it must prevent your body from going into motion at time of impact.
Installing the sub as a "barrier" forward of your body means that you will impact the webbing at the delta(difference) of the vehicle speed (zero?) and your pre-impact speed (70? 80? 150?) The belt-as-barrier can do more damage than no belt at all. James Bond being lazered in half comes to mind. Scary
If you install correctly at the lap-anchors, leave it atop the seats, and wear it like a diaper, you will be amazed how much better it holds your butt and thighs down and back. Heaven forbid you roll the car, but with the harness installed correctly your legs and thighs will be held down into the seat like a baseball into a catchers mitt......
I have rejected some scary short-cuts.....shoulder belts bolted to rear seat tracks, sub belts bolted to front corner seat tracks. DONT TAKE THE EASY WAY ! TAKE THE SAFE WAY