kits available for disc brakes

I have a 1974 Duster with a small bolt pattern (5 on 4") in a slant six car. The 10 inch drums up front do stop the car, but I think I want to invest in disc brakes for the front. I want to retain the lug bolt pattern and my wheels are cragar ss 15 inch front and back. I realize that parts and pieces can be assembled more inexpensively, but I'd prefer to buy all new in engineered kit. Could I get some recommendations on good front disc brake conversion kits for the small bolt pattern? I'm a fair wrench turner, just new to Mopar. I guess I need the spindles too? I want to buy everything from a single company to keep it simple.