Newbie Stang Owner Has Questions Help?

I just had to buy a Mustang....just had to. This is probably due to going into my second childhood, but nevertheless, I am excited and just waiting on the dealer and the ride is mine! The dealer was clueless as to what I was buying....good thing too, since his mistake was my gain. There is a difference in GT premiums and deluxes, and so on and so forth. He couldn't give me an answer, so I did the research on the car myself. It was fun reading everything I could find out about this model car, and now I throw out a question to all of you, who have probably a ton more knowledge than I ever will.....

The vehicle is a 2005 Stang GT Premium-but on the details sheet, it say that it is the "4 passenger specialty". Have no clue what that is...what it means for my car, in NH, if it means anything at all.....but just asking all you folks out there. I look forward to reading the posts! Thanks everyone!