There might be as the I ordered a dash kit for my 05 but the kit came with a different size top dash tray for 03 down and a extra piece for the mirror but it was only the body, not sure if that helps you at all though.
^ Nope, I just have a 2004 with navi and the cars with navi did not come with a compass in the mirror. So, I want to install a mirror with a compass.
I purchased a 2004 mirror from some shop through car-part.com and the mirror came with no auto button . So, I returned that one and purchased another one through ebay but it is off a 2003. I sure hope it is the same exact mirror.