I would call them and ask them the difference. You are correct there are two different grilles listed for the later model Crossfires.
I punched in the same info for an 05 and got 1 grille and I think it was 259$
I always thought all years of the Crossfires were basically the same but I was wrong. There are subtle differences, I have no idea what they all are. One involves the glove box size from older to the newer ones. The newer Crossfires seem to have a smaller glove box due to the knee airbags. So this doesn't surprise me but the people at Chry. Parts Direct are nice and seem on top of the parts, I'd call them.
Pat