A question to those that have a snorkel..

Black is where factory gromets go. they have a lip that sits above the hood surface and keep most of the water out
Red are the spots where holes to mount the scoop go and the 2 holes that are circled with red and purple should be done first then measure the scoop for exact measurements to the other holes needed.
This is a 73-76 Dart Hood but 73-76 Duster Hoods are the same way