[dartman]

All I know is that if it not a factory air cleaner base,it can not be higher than the choke horn (meaning if you put a strait edge cross it,the choke horn has to hit it.) had to take it off in the 4th round after they saw it when I was getting fuel checked, another UN-written rule,that was in stock

for super stock
AIR CLEANERS
Optional. If used, air cleaner must be OEM automotive or retain
OEM configuration. Air-cleaner base may be cut or trimmed, but
welding, bolting, riveting, epoxying, or any other form of fabrication
prohibited. Ram tubes, velocity stacks, or other than stock-type
base plates or ducting prohibited. Cooling holes prohibited in
radiator side panels, etc. Factory air cleaners and/or scoops that fit
through hood must be affixed to carburetor as per OEM only.