granada front disc brakes

i wanted to know if i could put a 5 lug rotor on the front disc brakes of a 75-78 granada disc brakes that is 4 lug? i'm having problems finding a 5 lug set up in the junk yard but there is plenty of 4 lugs.i wanted to do a front disc converison on the mustang i have.

I've never even heard of a 4-lug Granada unless the 6 cylinder cars had them :confused:, but I haven't heard of that either.

I have a Granada disc conversion waiting to go on my car. When I asked for new rotors, they didnt ask what engine the car had; they just gave me five-lug rotors.