The seatbelts will be bolted to the top of the L-brackets which are made of 3/16" steel. They'll go on the backside so they don't interfere with the seat cushion. I still need to drill the holes.
Here's the rear seat structure, console, and tubs so you get an idea of what the problem was. I thought about mounting them on the sides of the seats, at the driveshaft tunnel and the armrest, but decided not to go that route.
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