changing control arms- brake question

[hotrodhomi]

Are new brake components (ie. Rotor, calipers) needed when changing form ’72 control arms and spindles to ‘73+ control arms and drop spindles?

[Tx Firefighter]

No need to buy new brake parts. The 72 rotors and calipers and all of that will go straight onto the later spindles .....*****as long as you have 73+ spindles for the 1 1/4 inch rotors. Some of the 73+ trucks used 1 inch light duty rotors. If you spindles are for the light duty parts, the 72 brake parts will not work*****

[hotrodhomi]

So all 1/2 ton '72 rotors are 1.25"?

[Tx Firefighter]

yes