I have a 69 Convertible and I have kick panels with the fatory holes. I put in some rectangular polk audio speakers and used the factory aftermarket grill covers that fit pefectly with just slight modification

This was of course in the front. I have the reproduction stereo for a 69 that looks like the original from that Classi industries now sells but is also available on ebay (US manufactured)

I have not yet figured out what to do for the rear as of yet and i have deluxe interior but I cant bring myself to cut up the door panels. So i guess the rear paqssengers will have to suffer a little

The other thing is I have a factory 8 track and because of some voltage differneces i have not yet tied it in