Wow. I had a good laugh about the comments your wife made!

With that equipment list, my idea isn't what you want; I was gonna suggest you repair the original speakers if possible. I did only because it seemed a sure way to get the "right" speakers to fit what I found to be very small window clearance. I also wanted to preserve the original grills in the door panels.

But it doesn't sound if you are being fussy about keeping the Bertone stock, so you are probably looking for a custom solution for all that sound equipment that doesn't clash with the wood grain, and remain low profile. Well, then, I've wasted your time, as I can't help there. You have a bigger challenge than I had with my regular old 79 244.
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Art Benstein near Baltimore