There still might be a B5 6 speed 2010 R/T at the stealership that closed last summer down the street from me. They packed about a dozen cars in their showroom after they closed, 3 or 4 Challengers including the B5. There are still a bunch of the cars there, I haven't peered through the window lately to see if the B5 is still there though.
Those cars must still be for sale, strange.....