I often use my 8-person Suburban Carryall as the truck it was designed to be. With legal child seats (2) and/or seat belts (5).

It is a smooth, safe, and very quiet ride.

The two-seater front has not yet been set up with seat belts.
The front “jump seat” might never be equipped with a seat belt?
Does anyone have a first-hand recommendation for a seat belt assembly for the front "jump seat" in a Suburban Carryall?
Thanks