(I'll be adding piece by piece.)
Anyway during the time that I was buying some of the exterior items, I also bought a bride zeta 3 with bride rails, a bride brix2 also with rails, a takata 6 point harness with gel pads, and a cusco cage with added door bars and harness bar. I got it black, painted silver and now deciding to powdercoat it back to its original cusco blue. Here's everything mocked up in the car, and a picture of where the seats and harness sit.

( I do not recommend people do this, as it will bend your rails a bit.)