SS/GT Super Stock GT Hood Rule Amendment
 

This should answer lots of questions...

SECTION 12B: SUPER STOCK /GT, BODY:7, HOOD (Page 14) (New
paragraph after FLOOR) (2/2/2021)
Full stock hood including latches, hinges, springs, brackets, and braces as originally produced must be retained.
Hood openings and/or hood scoops other than original equipment prohibited.
OEM hood openings must retain all flappers, grilles, hardware, etc. as originally produced.
If using a model car that has a factory fresh air hood, but the engine combination is a non-fresh air engine, the openings must be blocked off.
Non fresh air engines = No openings. Fresh air engines with fresh air hood permitted.