Air Grabber air cleaner

Ok I have another question, air cleaner lid on 72 RR with AG. Should it have the 400 4 barrel call out or just the cleaning instruction decal ??

here's a pic of the air cleaner lid that was under the AIR GRABBER on the 60K mile '72 RR/GTX hood pictured in your other thread, Dec. '71 St. Louis build