The 1975-78 Maverick spindles are the same parts as Granada.. The 1974 Maverick spindles are close, but use Mustang II calipers.. They will still bolt right into the stang, but brake parts are a little different..
I used front spindles and discs from a 75 v-8 maverick on my 68 shelby clone. All parts were the same as a 1970 mustang...ie: I needed a new caliper, order one for a 70 stang, same with pads, and I had to use 70 mustang tie rod ends on the spindle.
They are the same. My car has maverick spindles. All the other parts (ie rotor, calipers, bearings, hoses) are Granada parts. The Granada hoses are supposedly a bit better. They have anti-ballooning rubber rings on them. If I were you I'd buy new rotors. They're pretty cheap.