Anybody installed 3 point seat belts?

I'm getting ready to install three point seat belts.

Has anyone done this installation to their moho?



I see the structural support adjacent to my driver/pass. windows

I've heard the support is only 1/8" thick , so I will need to reinforce the support rib. I plan on installing a steel plate, w/ 4 bolts into the structural rib for the shoulder support point.



Any thoughts?



Appreciate any input.