not sure if this is for my Demon..please help

Does anyone know if these are something I forgot to put on my Demon, or if it is from my Challenger project? I found it with a bunch of other Chall. parts while rearranging the garage, not sure if it got mixed up during my move back in May or what- the first picture is a mesh, screen like piece that seems like it is for the cowl/wiper area and the other is a speaker fader switch. I took the Demon apart so long ago and didn't tag the parts ( I know, my screw up ) and really can't remember where either of them go. Any help is greatly appreciated. Ed