SFI 25.5 Roll Cage Help

Thank you for you guy's input.
I have been dissecting the "book" and I think I got it now. Biggest issue I see is my ladder bar cross member is way further forward than a 4 link would be and I won't upset its mount in the rocker.
My cage currently sits on a 12" x 12" plate linked to another 2x3 tube attached to the frame and rocker in the rear. I'm 6'4 and with the mid frame, engine back, and 3 pedals it looks to be my only option. I will fuse in a square tube to the rocker from there forward.
The frame to rocker diagonals will have to go to or my exhaust won't fit.
If it doesn't pass I'll add or sell the roller, by a shell and put a tube chassis under it.