Thanks in advanced for any help you guys may be able to offer. I have a 2000 z71 Tahoe, old body, and i am in need of replacing all the factory speakers in the vehicle. The Tahoe has 1 in each front door, 6.5" if im thinking correctly. 1 in each rear door, 6.5" also, and 2 4x10's in the rear roof. If i am incorrect on the sizes, someone please let me know. As for my most important question, the factory tweeters, what size are they? They are located just up from the window and door lock switches. If i am incorrect on any of the sizes, correction would be greatly appreciated. Thanks again everyone.