86 Chevy C10 1.000 Rotors vs 1.250

[gamtn]

I'm changing my spindles from the ones that take 1.000 rotors to the ones that take 1.250 rotors. I know I have to change rotors, spindles,wheel bearings,calipers,and brake lines. I was told upper and lower ball joints and brake pads are the same.But no one can tell me about the back plate dust shields that go behind the rotors. They bolt to the spindles. Are they the same?Somebody please help me !!!