Question on Cages

I used to have a small paperback book with NHRA IHRA specs, not sure where we obtained it anymore or where it is currently but a Google search will probably yeild good results, I don't remember any specifics about the floor plates but more so location of the hoop bar in reference to the driver seat, and the door bar height, think I had to be within 6 inches behind the seat for the hoop. Around here they don't check the cert unless you are close to the 9s, our car ran 10.40 all day long and they never asked for the cert or looked for the sticker, they were more worried about me having a drives shaft loop, rollover valve for the fuel cell and a battery shutoff switch, I had an old open faced helmet for Pete sake. I had plates welded to the floor sheetmetal and they were trimmed less than 6 inches and the inner hoop bars that run at an angle toward the floor behind the seat were through the floor and welded directly to the frame connector. I would just take it to the track and the worst they can say is no. ???