You can go to the parts store and buy everything you need for front disc brakes for a 1977 Granada and they bolt right on! That's what's on my 67 coupe. Buy the rotors and there gonna be integrated hubs so you might want to get new bearings at this point and buy your caliper mounts and calipers and lines and pads all for a 77 Granada cost you maybe $150
in fact yes, we have a few guys at fordsix.com that have used the scarebird setup for putting disc brakes on six cylinder cars. and there have been a few guys at stangnet that have used them for V8 cars.
my mind is aglow with whirling transient nodes of thought careening through a cosmic vapor of invention.