Lowering my 82 Sierra

[fastnloud]

I'm looking to lower my 82 GMC Sierra c1500 4/5. Does anyone know if they used 1 inch or 1.25 inch rotors on these trucks?

Also, would it be best to do spindles and springs combined for the 4 inch drop in front instead of just 4 inch drop springs? I want to be able to get a good, straight front end alignment.

I'm going to do a 5 inch flip kit in the rear. I will be using 15x8 wheels in front with 4 inch backspacing and 15x10 in rear with 5 inch backspacing.

Thanks guys.