I have a box full of power antenna stuff from the 60's. I really don't know specifically what any of it fits. If you see something in the picture you would like more info on, or would like to purchase, just holler!
Since a selling price is required, let's go with any piece is $5 plus actual shipping costs.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
my 67 Caprice had the rear power antenna from the factory that did not work when I bought the car so I swapped in a none power one. I have no clue to what it looked like.