I was wondering if anyone wanted to weigh in on this. I recently did an event with NASA. They have started a Spec3 ("SpecE36") class. One of the requirments is that the shock/strut towers, subframe, rear control arms, and mounting points be reinforced. I was told that this was purely for safety to reinforce known weak points and the parts are all BMW stamped items. As far as I can tell, IT does not allow for these upgrades. Is IT overlooking a potential safety issue? Any opinions?