Stock Seats and Cage/harnesses question

so with all these opinions on cages on the street are a no no, what do you do if its a dual purpose car? street strip cars that run 11.50 or faster need cages dont they? Id actually rather not have a cage although some think its cool, it just gives more reason for a cop to hassle me and its more money id have to spend...but if i want to pass tech when the time comes im going to have to have one, so thats why im looking into this