5 on 4" Discs on a '65 Barracuda. Year/car?

Here are photos of the car
http://www.moparmax.com/news/2007/news-ii_4-9.html
Its about 3/4 down on the page.

If I take a photo of the Disc and caliper can you confirm that they are the Kelsey Hayes option?

Do you think that was stock?