That blows, man. Really. This must be hit and run week for the crossfire. There have been a couple of them on the forum lately. There have been alot of conversations on here lately about the difficulty of finding parts (whether that includes interior components like speakers, I dont know) Would be good if you could locate a Crossfire at a salvage yard and find the speaker you need. i'm sure that would be alot easier, cheaper and quicker than ordering new. Hell, Im now going on 6 weeks of waiting for a tube of touch up paint. Many members on here, esp. in the warmer areas, have had good luck having their headliners reupholstered. I'm sure it will go well for you as long as you find a reputable shop. As far as hit and run drivers, I will spare you my rant. I already did that in another post.
Good Luck!