I have more than a half dozen. I only get ones produced for promotion. For example, an early Chysler employee health day, had a new Challenger on the T shirt (Challenge yourself), then there's the black one that was a prize at the 2006 Detroit Auto show, one from Mopar Nats, and one from local hot rod shop and one from So Cal Challenger group. I don't buy any that are, like, just made up by guys selling on ebay.

They are listed under "misc" on the long lists. I've posted the link before and I can do so again, if you like.