Hello Everyone !
I have read many post on the 6.2 and some of u have been desperately trying to add AC and change to serpentine Belt system.

Here are the part numbers as follows.
15589747 Bracket, Gen & Power Steering Pump
15592137 Bracket, AC compressor Front
15592139 Rear support Bracket
U can get the parts NEW http://gmpartsheadquaters.com cost me about 130 bucks with shipping..

I did a swap from a 5.7 to a 6.2. I was able to use all the pulleys from the 5.7 that i had.. U will still need to get a reverse water pump, New belt tensioner and new serpentine belt..

Good luck Everyone !