I am the one that first posted this in Z71Tahoe-Suburban.com, I installed this on my 04 Avalanche the first week on September 2010 and I am still amazed over the improved peformance of the brakes!
Total I spent on this with slotted rotor, calipers, and Z rated pads was around $400 but you can use OEM type parts and spend around $200 +/-
I'm glad that this has been passed around to the various forums for all to use. Feel free to ask any questions!
Link to write-up on Z71Tahoe-Suburban.com
http://z71tahoe-suburban.com/iboard/index.php?showtopic=28846
Part List
Caliper w/bracket 19176793
Caliper w/bracket 19176794
Pads 1092.10 Performance Friction
***Caliper part #'s are Durastop Police Tahoe Calipers, they have high temp seals and some other things that help them handle and dispate heat better***