Post Script - I've observed (anecdotally) from original cars I photographed at MCACN 2019 Vintage Certification that Norwood (possibly Van Nuys too) used brown plastic tail light bulb sockets on Rally Sport equipped cars and white on non-Rally Sport. These are not referenced in the AIM as there were installed by Fisher and there are no PN #s embossed on the sockets to verify if they differ.