seat change ???

[Frenchoe]

Hi, i'm new here, I'm french, live in Paris france, and own a 2002 dark blue tahoe LT AUTORIDE full options. Now, my questions : Is it possible to change the 2nd row bench and put 2 captain chairs ?, second: The car is originaly a 5 seats (no 3rd row) when I look in the trunk and put my hand on the carpet, I'm not sure I feel the holes that would allow to put a third row...Does anyone has the answer ? can I add this third row ? (I kow the metal brackets are sold almost everywhere on ebay, and the sellers say that all tahoes are 7 seats, but they're sellers...I need to be sure before...Can you give me hints so that I can check by myself ? without tearing the carpet apart of course...!)
Also: is it possible to change the drivers mirror glass only ???
thks
Thank's!