Audio Systems: Bose Amplifier add-on, gm delphi, chevy silverado

Question
I have a 2004 Regular Cab Chevy Silverado with a factory radio (am/fm,single cassette,tape deck, NON-BOSE). I have purchased an In-Dash 6-disc Delphi radio out of a 2002 Hummer H2 (Gm/Delphi part#15179349, radio manufactured on 7/17/02). I was told by a delphi factory representitive that it would work if I bought the factory Bose amp and wire harness connector.  The radio has been cleared and has no codes. (I installed it and put the Tech II on it and it did in fact say I needed an Amplifier connected to the radio).  My question is: What Amp and harness do I need? There are so many! (The dealer is no help, since this is not an OEM option for Regular Cab Silverados.) And where is the best/cheapest place to aquire this Amplifier and Harness?  Any help at all would be greatly appreciated. Thank You.  

Answer
I cannot in good concience tell you to spend more money on this upgrade. I don't know what harnesses and amps you would need, you would most likely be better off pulling it all from a salvage truck. This type of swap is fraught with noise issues, poor performance, and wiring nightmares.
You can get way better sound with a nice aftermarket head unit and speaker upgrades.