Wow interesting, there was only one part number used for the Cluster Bezel 4G7Z 10876-AAI have 1 05 car and 4 06 cars. All the 06 cars have the cast/plastic look. The 05 is the only one that has the BRUSHED METAL LOOK. Looks like we have found another difference !
Its not as though 05 and 06 had any listed differences. Neat find !