I am planning on installing 2 rear speakers in the package tray of my 69. Are they identical to the 70 speaker grills? My car only has a original front speaker, there is speaker wire running to the rear but the package tray is uncut, so I assume someone had a couple speakers just sitting on package tray. Anyone have pictures of an original rear speaker grill? Also does anyone have original part number or know if original speaker covers from a Camaro or Impala would be the same. I also am considering making a new package tray out of masonite and covering with some type of fabric, but I don't recall seeing anyone with that kind of set up so I'm not sure how that would look.