What is new with seat belts- racing harness?

[Michael C Henry]

I'm still running the belts that the original builder made. Wide Simpson lap belts and Yd single point shoulder straps from regular smooth OEM belt material coming through the rear bulkhead. The old Simpson lap belts has a large piece leather piece sewn to the latch side to keep all the end connections off my guts. I remember many times leaving and still trying to hook everything up . Trying to stack all the shoulder and other lap belts on the tongue and then catching everything with the hook on the lever. These belts are too old. SFI tags are missing and out of date. Probably wouldn't fly with a track day, if ever would.
I've grown to like the looks and function of the newer cam lock belt systems. The military used them in the armored Vehicles maybe just to get the soldiers to use them. The ARMY rigs are full of hard a and sharp spots, you don't want to hit with any part of your body. On the drivers side I have a spreader bar on the roll bar with two eyes for the new shoulder strap anchors above my shoulders. I'm using the nostalgic buckets and anti submarine belts don't do much. So I see a five point harness but not use the antisubmarine part.
If I was using a new racing seat with sides and a higher back and head support the anti submarine belt would go through the bottom of the seat just ahead of your crotch. But I do not have a racing seats. The passenger side probably I'd still a use single point shoulder strap harness through the rear bulk head, on a reel or tension devise 'ill need something similar but no roll bar.

What don't I know? what can you tell me?