..... about 50 vintage cars. I didn't verify every Cobra, but my guess is more replicas than originals. Two Ford GTs, at least another three in the garages. Probably another 50 vintage cars in the paddock.
How many of the Ford GT were "replicas"? There was even a Daytona
Clone er Coupe. We are seeing fewer and fewer "real" cars at conventions. It's all just a matter of value. You see some fresh restorations because the owners need to bring them and have them judged for that value adding trophy. You won't see them next year unless they have corrected problems and want a higher rating to make it worth more.
More and more cars are disappearing into multi Shelby collections with owners who are not into the club scene or interested in driving their "artwork" or much less in flogging it on the track. Heck some of those owners have other brands and just bought a SA car for it's investment value.
As far as track time goes the newer cars (even a base Mustang GT) will lay down much better lap times and take a far lesser skill level to do it so there is no reason to risk the value of a classic. OK rant over. I don't even want to go into how many trailers that were at SAAC1 vs 46.