That is what I was asking to begin with, I guess I just did not clarify very well what I was asking. I have the rule book and understand the concept of the cage, but this is my first attempt at putting a cage in a car without a structure under the floor to attach to or as in the case of my camaro, between the subframe connectors, additional plate welded to the floor, and the front down bars from the halo bar and the ones going through the firewall to the subframe, there was plenty of support to attach the cage to.