[Zeke]

I'll bet your Boxster offers more rollover protection than your old 911. The question is, do cab owners drive with the top up or down? If down I think arm restraints should be required.

More: I wonder on a Boxster what kind of aftermarket roll bar would pass muster. Not much room there to bolt one on and practically no way to brace it unless the bracing went forward into the door openings.

I had a roll hoop with rearward bracing on my 71 S and the way it mounted was somewhat less than comforting. I think it was there to provide an attachment for the 5 point harness as much as anything. It sure was not an integral part of the car. 16 3/8ths bolts through maybe 5 x 5" plates bolted to the floor and rear fender wells.