Is there a rear disc center hole dimension relationship to brake options?
 

I have a 2005 Silverado K2500HD with rear disc brakes.
The parts folks list two possible centre hole dimensions. 4.63" and 4.82"

My truck has the 4.82" centre hole rotors. I ripped one off and measured it before I bought the rotors.
It has the full floating 10.5" AAM rear axle.
It also has JH6 9900lb brakes.

What I'm wondering is if we can find a correlation between the axle type and brake RPO and the rotor hat centre hole dimensions.

If you know what you have I'd appreciate if you could post here.