I realize these are terrible quality pics, but this is what I had on my phone. I will change them for better ones someday, but for right now, you can see how I trimmed the seats and made rails, and how the bar fits with the seats and belts. You can also see that it allows retention of the OEM speaker locations without modification, which was one of my goals.
As mentioned before, the belts are only barely below horizontal (about 5*) from the seat to the bar, and there is barely enough room for the 3-bar adjuster. If I were going to build another of these, I would modify the design a little to put the bar about 1/2" lower and about 3/4" farther back. I am happy with the fit and safety as-is, though, so I will likely not build another.
02 Triumph 955i
93 Mazda RX7 3 rotor
09 Mini Clubman
14 Mercedes GLK250
99 Mygale FC
Last edited by pwildfire; 06-03-2014 at 01:46 PM.