What is the strength of the FFR supplied windshield frame? It seems very weak and wimpy. I can't imagine there is any steel in it, as it seems to be strictly a cosmetic plastic frame. My concern is that I expect to use my car for some track days. And, I know that N.A.S.A for one, will not allow any convertible on track without a strong windshield frame in concert with a good (sufficiently tall) roll bar. Anyone considering a partial cage/front roll bar to supplement the weak windshield? Can a more substantial frame be added to the inside of the plastic frame?