70-76 Demon,Dart sport,Duster Pictorial History

I believe the seperate twin scoops and holes began on 1970 Dart Swingers and then continued through 1971 on Demons, which used the same hood.
I also recall hearing about Chrysler considering a sealed ram-air option with these holes. They did have 2 years to do it. If it was considered for '72 and '73, it was probably economics and emissions that kept it out of production. And, as I saw somewhere, Chrysler stopped putting so much empasis on performance because of gas prices and emissions.

NOW......hopefully someone has access to part numbers to verify something. I did PM 7demon2 asking if he could access the parts books again to see if there were 2 different hoods in 1972 and 1973. Since then, I found this link and am wondering if these are actually part numbers for 2 different hoods in 1973! With scoop - 3684286, and without - 3684266

Interchange numbers 54 and 55 in the upper right-hand corner:

http://books.google.com/books?id=er...ts=PaBHnX6I86&sig=kogwzt81PhxCsbNjP4KHBL3iDAk

Would the only difference be the holes for the studs, or did it also include the 4" holes for fresh air, which do have the grommets listed in the parts books as production/replacement parts for the years in question?

I also remember seeing some "crash" books, or body parts replacement books with soft covers that had illustrations for the parts listed. One of those may have illustrations of the different hoods or may mention the differences if those are the part numbers.