11 3/4" rotors A-Body

I have a 1973--1976 k--frame and i'm putting it in my 1969 valiant. I want to go to the big brakes with the 4 1/2 bolt pattern, I need a good set of spindels, I see Dr Diff is selling re-pop brackets for the calibers, what 11 3/4" rotors would you buy, i'd like to keep them made in america if possible, I see a lot of people are using the aluminum mopar master cyl, which one do I look for, manual disc brakes with drums in the rear, i guess i have to change the valve to a disc brake one.....Thanks Webby ( oh ya i'm really looking for a nice set of spindels for the big rotors in my A-Body ) Thanks Webby.