per your listing, just an FYI 914-6, 964s, and pre 96 911 turbos are all aircooled. Which makes the class structure a little ambiguous.
Those particular models were pulled right out of the NASA rulebook, and I was not really concerned with keeping the aircooled cars separate, I just broke them out so I could list them easier for the aircooled people looking at the lists.
Do you think (based on experience) they are in a class appropriate to the car? If not, where would you place them?