need rack mount face for B&K AVR 307

Hello Everyone,

Back in the day B&K sold a rack mount face plate for the AVR 307 and 305. Does anyone know where I might find one today? I've been searching the classifieds, evil bay, etc, but haven't seen anything. I have a 307 that needs to go in a rack - I have it just resting on a shelf at the moment, but the rack face plate would be much nicer.