Modern 3 point seat belts?

Mopar92 said
Well I guess I was thinking along the lines of say a Crown Vic. The reel is in the bottom. There is a slotted loop where our shoulder anchors.

That's the same as the one's I linked. Just get an 8" extender on the shoulder loop so the belt is in the right spot.

Treblig said
For shoulder harness type belts I use these. The reason I like them is that they are inexpensive and they are factory made for an actual vehicle (HUMVEE). For this reason they function very smoothly, like the ones on a modern car. I've bought and used the aftermarket shoulder harness belt and they are expensive and are always "clunky", they don't retract well and they are restrictive...oh, and they cost a lot more.
These Humvee belts are military surplus but brand new, somebody probably bought a truckload real cheap and they sell them on ebay. I installed a pair in my daughter's car and they work very smoothly just like a new car!!
I'll never buy another type again, only the Humvee belts!! They also come with extra parts that you can use for other stuff!!
treblig

NIB HUMVEE HUMMER M998 MILITARY 3 POINT REAR SEAT BELT KIT 4X4 OFF ROAD TRUCK | eBay

Yeah, but no drop on the shoulder anchor. If they don't fit right they won't work right.