Dual snorkel scoop dart/ duster difference

Ok, did some research. Using the part numbers from 383s’s post, The 3573698 is the part number for the 72 flat hood. The 3672605 is the 73 dart sport with the ridge hood. They are two piece. The top is the same for both. The bottom is different for the flat or ridged hood.

Are both of those part numbers marked on the top piece?