Paul,
Everything looks to be legit there,at least to my untrained eye.
My car is almost a twin to yours,Norwood built (04D),Hugger Orange,Blk stripes,711 interior...the only difference was mine was built with a Blk vinyl top.My body sequence # is 278576 so there were some 26,326 Camaro's built between the two cars.
Have you been to
www.camaro2ndgenerationregistry.net yet?