In the early '70's I owned a '68 New Yorker that had heat and ac for the back seat. A few years ago I purchased a '66 Plymouth Satellite that had dealer installed rear heat/ac. It was mounted to the package tray. Does anyone know if this could be the same system used in the New Yorker? Here are some pictures of it. I don't plan to put it back in the Plymouth so I will sell it if anyone is interested.