Thanks Striperjerk1. I forgot to mention in this thread that I just got a 2002 Silverado. I only saw one set-up on that site for Chevy's that were Pre 1998. 4 CFM @ 90 PSI is A LOT of air. I will look into that route too. I always wanted a nice pair of air horns as well, and that compressor could handle them easily.
Thanks for the invite and I will definately take you up on it. Like you, I am not willing to modify and possible void the A/C warranty yet.
If any of you guys see a 2002, pewter (champagne) 2500HD Silverado, being driven by a heavy, shaved headed guy about 25 years old, wave me down and say hi. I hope I get to meet some of you tommorow at the show. I will be there first thing in the morning.