Has anyone looked into mounting the seat to the roll cage? This is required for FIA roll cages in the WTCC. The best way to describe it is in this picture

http://polestarclub.iweb.se/archive/...n_1024_768.jpg

This is an illustration of the Prodrive designed roll cage for the ETCC/WTCC/STCC Volvo S60. See how the seat is attached to 2 tubes mounted laterally to a longitudinal rocker panel tube. Also note the vertical tube connecting the rocker tube to the x-brace intersection.

I believe the design intent is to created a complete tubing safety cage that the driver is enclosed in. This is the design approach I would prefer to take vs. assuming the floor pan is stiff enough to protect me. Not to mention the driver's seat will most likely shift with the side entry protection bars.