I basically answered all of my own questions so if anyone else was interested:
The autotechnick bar comes with a harness bar mount but its between the rear shock mounts so its quite a bit of a ways away from the rear seat backs.
The best application would be to install the roll-bar and get a separate harness bar that runs between the shoulder belt mount points that way it is only a few inches away from the seat backs and should provide the proper angle for the harnesses.
To get the car ready on time (going to VIR end of Feb.) we decided to do just the harness bar and hold off on the roll-bar till after VIR.
Also the bar does require a bit of modification to the car, you will need to make some small slits where the shock towers are so that you can mount it, but they are barely noticeable.
Metro PCA DE Instructor
10 Audi R8 V10
07 Lotus Exige S - Track Setup
08 997TT (65,000 Miles - Gone)
07 BMW M5 (Gone)
05 BMW M3 (Gone)