I have a good setup in my 74 i bought probably 10 years ago......but vendor no longer exists. Up front were ABS or some sort of plastic that held 5 inch or so speakers and in the rear, the shelf had holes in it.
These have the holes in them, but the vinyl cover and padding do not, so you can use them either as a rear shelf, or cut the material for the speakers. They can have them made (TMI) in almost any color or combination of colors you want.
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.