Making your own package tray (rear speaker deck)
My car came as a radio delete car, and i am installing a hidden audio setup in it, that will run pandora and stored music files off my phone.
I purchased vintage chromed metal 6x9 speaker grilles off evilbay, and sandblasted and primered them with an epoxy etch primer a couple years ago. I fit these against the speaker cutout tracings on my new package tray, and made the speaker cutouts slightly smaller so the grilles will cover the holes.
I think the speaker grilles i bought and will be installing look period correct for 1967.