I'm new to IT and building a car that was originally built for Lemons..... So, we have some repairs and replacements to make....

I know I can use the existing holes in the front Air Dam for front brake cooling - my concern is the rear....
GCR 6b says:
Air ducts may be fitted to the brakes, provided that they extend
in a forward direction only, and that no changes are made in
the body/structure for their use.

My initial plan was to add some NACA ducts in the rocker panel to bring air to the rear brakes. My interpretation of the above is that I can't.
Am I correct? It's no-go on rocker panel ducts?

If that is a no go...
Can I mount scoops on the lower suspension to scoop under-car air - as long as it doesn't hang lower than the exhaust and wheel?

I'm trying to absorb all the rules & regs but I'm certain I will miss or misinterpret something....

Thanks !