73+ Drum to Disc Options

I converted my 1972 Duster with 10” drum brakes to 1973+ 11” disc brake’s including the 73+ disc spindles and upper A arms. It was entirely bolt on, just have to add in front end alignment, but my lower A arm bushings were toasted anyway so I would have had to do that anyway. I basically duplicated the entire 1973 A body 11” power disc brakes with drum rear brakes and proportioning valve and got an excellent result. Most other kits have adjustable proportioning valve which will require testing and tweaking. Nothing wrong with aftermarket setups but with factory correct setup you can buy all the brake parts at Rock Auto or local parts store. If I had to do it again I would grab aftermarket upper A arms to get more positive caster into the front end (running +2” leafs out back), but those aren’t exactly bolt on and go. My handling is fine otherwise so go OE and get OE 1973+ brake spindles and if you have a 1973 up car you should be ok on the upper A arm already so would not be changing your front alignment much. In the end for a street driven car I think that’s the best setup. Also if going to power brakes upgrade torsion bars, 1.03” PST bars in my Duster was best decision I made.