05 Tahoe knowledge needed!!!!

[Heidt12thMan]

What size alternator does my 05 tahoe come stock with? It has dual climate control, bose and onstar, etc. Im wondering cuz i put a stereo system in it and im thinking about doing the Big 3 Upgrade. Some people swear by it and others not so much. Thoughts?????

 

[Scrtcell]

I do believe that the alternator is a 160 amp you need to see if it has a group of numbers and letters embossed in it I think that that is a Dana 44...