New 2005 A6 4.2 Quattro S-Line owner

Hey everyone! I'm new to the Audi scene. Just picked up a used 05 Audi A6 4.2 Quattro S-Line. I really like the car and always wanted an Audi, especially living in upstate NY I can definitely use the AWD. Aside from being new to Audi I do have a few questions. I found an aftermarket tail light and head lights. The seller stated that they only fit on non-Quattro models that doesn't have the Stock LED tail lights and the Stock HID headlights.

These are the headlights I want:
http://www.spyderauto.com/product.php?id=PRO-YD-ADA605-LTDRL-BK&t=spyder

These are the tail lights that I want:

http://www.mobbmotorsports.com/mobile/product.aspx?ProductCode=SPY%2DTL%2D3640&gclid=CLC jhOvtns8CFUs8gQodwrsB_A

Does anyone know how do I go about installing any of these?