11.75" Cop Car Brake Swap

I remember reading an old aticle several years ago, l believe it was in Mopar Muscle. They talked about using the big rotor off a 76 Cop car on a 73 or newer A-body spindle. The best that recall it retained the 73 calipers and some type of factory mount bracket. Has anyone heard of this swap? My 65 already has the 73+ brakes so this be an easy ugrade for me.