Back in '05 or '06 I saw a Cusco 6 pt. rollbar installed in a 350Z when I was out at Willow Springs for a track day. The bar actually had S bends on several of the vertical bars...which basically meant it would compress like a spring under any kind of load. I instantly wrote off their cages/rollbars at that point due to the poor design.
I can only assume that the one I saw was more of a 'racing style' cage for a show car to look 'racey,' not an actual safety device.
It looked like the pic below...can't imagine it would take much force to fold that S-shaped A pillar bar!
