I'm not sure I agree Dave, at least in theory.The curb weight difference between my 1970 Fury convertible and a 1996 Dakota Club Cab 4x2 with the same engine is 327lbs. 1973 B-body rotors are 10.97", 1996 Dak rotors are 11.37" and 1973 NY'er rotors are 11.75". Is 0.38" going to make any difference? NY'er wheel bearings are the same as B-body - 1.3772" while Dak wheel bearings are same as D150 - 1.4961"
I just think that all this stuff is insignificant to braking performance for a street vehicle.Master cylinder bore size and brake hydraulic system balancing are much more important IMHO. I doubt very much there is any strength difference between a NY'er spindle and a Dak spindle.On top of that the Dak has bigger wheel bearings and ball joints.The more pressing concern is the alignment. This is of course all theory until it is put into practice.Everyone is entitled to their own opinion and proceed at your own risk.