I just got an 07 GT3. I also have a tracqmate/chasecam setup. This is a street car with full interior so my options are limited.

I do not want to tear my interior up and I'd prefer it looks stock if possible.

I am toying with the idea of rigging something that I can take in and out, but I haven't figured out how to secure the equipment. Was thinking about attaching the boxes to a piece of plywood, but I'm not sure how to secure the board so it's not sliding all over the car.

Anyway, let's see how you did it.