Vikki
The information that you gave about the carburator base and lids are correct. But I know about another option that you forgot to mention and I just want to school myself and others about the rare Ram Air options. This system is totally unique than the others. It came with either the pancake system or the close snorkel air system and the Ram Air system, complete with installation instruction in the trunk of the car for the local dealers to install. Parts include in the kits are as follow:
1) Two sets of hood insert, one open, one closed.(color keyed to original color of car.)
2) Carb. base and lid and hood pans(with template).(all painted black.)

Hopping that my statement could be verified by you or the forum.
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Juan