Another thing for you to do if you want to to see some of the cars is to visit the Shelby museums:
1. Shelby American Collection near Boulder, CO (first on my list since I live nearby and visit 3-4 times a year).
Shelby American Museum. If you do visit be careful with your arrangements since it is only open Saturday from 10-4.
2. The Shelby collection at Miller Motorsports in Salt Lake City, UT.
[Note that 1 & 2 trade cars between them so if you're looking for a specific car - notably the Daytona Coupe and Miller's GT40's - they might be in Boulder]
3. The Shelby collection that is at Shelby American in Vegas. They give a tour daily and explain a lot about the Cobras but it also includes Mustangs and Dodges.