Our Seat Belt Tag
Drill through the pillar and into the mount so you can install 2 small screws to hold the mount in place.
Since this car already had lap belts in it, we used those mounting points on the floor to attach the retractor mechanism.
Next put the opposite end of the belt on the bolt and tighten in place.
Remove the top mount and layout upholstery to modify it for the top mount. Re-assemble with the upholstery in place and install plastic covers.
Now install the inboard soft arms. If your car didn't have belts in it, you will need to put the seat back in to lay these out. Always be sure to check below the car to be sure there are no obstructions under the floor pan.