FYI: A sales rep at autopartswarehouse.com told me that Brembo is/was the maker of the OEM Isuzu brake rotors. I called b/c I noticed 2 diff Brembo rotors with a price difference for the same year. The OEM replacement is $10 more than the aftermarket. Now, I'm not sure if he is 100% accurate but thought I would pass along the info. Brembo provides OEM rotors to a lot of car makers.
The very first item is supposed to be the OEM rotor.
http://replacement.autopartswarehous...20Disc&dp=true
BTW, I sent my rotors from tirerack.com back. They sent 2 different rotors.