White Stripe, That's pretty much my view's on my 67... I want it to "look" stock, especially to the average Joe, but I want ALL the upgrades and creature comforts I would enjoy and use...
I have the stock AM in the dash that works. And the Alpine in the glove box, 6 disc changer in the trunk with two amps, some 6x9's, 8" woofer, Aura Bass shakers under the seats, 4x6 plate speakers in the stock kick panel location with stock grills, dual speakers in the dash and tweeters mounted in the pillar moldings. (Not to mention motor and suspension mods and upgrades) but all of this is hidden from view, and or you don't notice it.
My car is no show car either, but just a driver that I want to enjoy, and also plan to keep. Given that I want to do it my way, but like Nash, I also like it to "look" stock or original....
Here are a few pix, you can see the kick panel speaker grills, and the tweeters etc: http://tinyurl.com/3qelm
Do it the way you like it, but be true to your bird! Lol..