in 66 ford had disc on your car, they may be hrad to find now but they mite be out there..
here is a site for you also http://www.galaxieclub.com/navigate.html
also found here on the site is this..
You will need to change the spindles at the least. The GRANADA swap is popular here and www.fatmanfab.com
has reworked spindles cheap or http://www.critesrestoration.com/galaxie.htm
has the complete kit or a list of needed donor parts.
I would also try 72/ TORINO spindles as they have heavier brakes. Just beware of any (if any) differences in the ball joint/tie rod end tapers. They can be machined.
here's more http://web.ics.purdue.edu/~stanchfi/...ion-60-64.html
hope this helps a little...joe