I believe there are 2 Raybestos part numbers for the front rotors that are described as Police or the 12.7" size. It's hard to get the information, but from what I can tell, I have the Advanced Technology, 12.7" Police/Buick style rotor, part number 580387. The black painted hat style. Definitely Police size rotors, due to the 12.7" size.
So this is basically the Buick brake rotor, 12.7", though not called Police
The Police Front Rotor they offer for our cars has the polymer rust resistance coating, BUT IT IS NOT 12.7", EVEN THOUGH IT IS CALLED POLICE. BEWARE!
This front part number is 580403P. BUT THE SPEC IS THE STANDARD DIAMETER, 11.92"!!
I cannot find the polymer coated 12.7" front rotor, or if there even is one.
The rear rotors I have are 581033, and are polymer coated, there being no physical size difference in the rear rotors, for Police or Retail/Fleet.
Bear in mind that I have the newer lever style adjuster rear calipers, requiring that style rotor. Not sure the cut-off dates of older and newer style calipers, '12+ I think is the newer lever style.
Here is this curious find for you to consider:
Scroll to first offering and note the listed OD size, click to get to the second link.
The police pads are clearly described and labeled as Police, so the only possibility of error is getting the older style pads for rear, which I did at first
, after using a parts list from the 12.7" Brakes thread. Older is ATD698P. Newer is ATD999P.
Also bear in mind that the PG or Professional Grade series is their LOWEST line, with no coatings or paint at all, and with a lower metallurgy grade of cast iron.
I would avoid the PG line, and stick to the Advanced Technology line or Police if you can find it, which is really just an offshoot of the AT line.
This may be the 12.7" polymer coated front rotor:
Plug in 580387FZN
You can't find much for a description of them though, but here is the full offering of Raybestos from Rock Auto.
If they are the correct 12.7", polymer coated, Advanced Technology line front rotor, they are a sh!tload cheaper then the black hat version, and the FZN is apparently the new part number for the 'Best', polymer coated 580387 basic part.
Confusing as hell.
Either way, the 580387 part number is good for 12.7" Police/Buick style front rotors.