While I'm not too sure about anyone in the Mustang Club of Maryland having any pull with American Muscle other than as customers, I would think that they would at least consider having you as an intern. It would probably be a non-paid position and one that would be a win-win for all concerned.
I saw on the bottom of your post that your next dream Mustang would be a 99-04 GT. I don't know if you are aware that Corey Jo is selling his 2000 GT Convertible here on the forum under Mustangs for Sale. He has it listed for $6,500 OBO which is a very fair price for a well kept car.
You might want to check out that add and see the photos of the car.
Midnight Blue
MCOM Historian