70 dart 470 ci drag car build.

MOPARMAGA said
Is this 6 point rollbar rule the base from what I work from as I am building a 12 point & if I'm reading this correctly on our Mopars we have to sandwich the floor pan with 1/8 inch steel plate top & bottom???

For other cage specs, you should refer to Section 21 of the rulebook: https://nationaldragster.s3.amazonaws.com/Rulebooks/2023_NHRA_Rulebook_22_11_08.pdf#page=326

My understanding is if the floor plates are bolted, then NHRA requires a top and bottom plate. If you weld the floor plates (which you should IMO), you only need one 6"x6" plate on top of the floor pan. Or the tubes can be welded to a frame outrigger connecting the frame rail to the inner rocker. That's how I did mine.

MOPARMAGA said
Do you guys do anything to the floor pan when you mounted your seats?
I bought a kirkey and the brackets but I was just wondering because the floor pans aren't very thick

I bolted my procar seats where the stock floor doubler/stiffener plates are. If your mounts fall outside of those, I'd make some new stiffener plates with some 1/8" plate or figure out a way to tie the mounts into the frame somehow.