1972 dart converted to 11" disc brakes,what do i use?

have a 1972 dart swinger,that i have converted to a hot 318 from a 6 banger,changed out the k-frame,torsion bars,upper a-frame arms,now i have 11" rotors installed,what mounting brackets should i use and calibers?also have upgraded the master cyl and brake booster,please i need to know where to obtain mounting brackets for rotors i am informed they need to be changed because of the dia. of the rotors?](*,)