brakes

I am replacing the front brakse on my H1.  First question I have and is probably a stupid one but here it goes?  How do I tell which one I have the 12k and under gvwr or the 12001 and above gvwr.  My hummer is a 2001 H1.  I am doing new front brembo rotors and new front pads along with a caliper rebuild kit.  I picked up good directions from flash off road.  Does anyone have any tips for me as well?
 
Thanks
 
Kyle

Sticker in the drivers door jamb will tell you. You should have the 10400.

ok just looked at it, states 10,300 what is the difference rotor size?  I am asking since the pads are the same no matter which unit you have?