Paul,
Technically, you are not missing any of the AFT cars. The museum car would be nice to have but it is a fantasy car and never on the AFT. I have it but do not display it.
K-Line was going to issue a new car every 20 years, and the museum car covered 1977 to 1996. Too bad K-Line is not around anymore to add to the set.
The original #111 was the exit/power car.