Can i replace this bulb with a Xenon looking light? and where can i find the fogs to match?

What you want to know.

As for the city lights, unless you get resistors and tap into your headlight wires, stock is the best way to go. Otherwise you could melt part of your housing.

Eddie Man on the B7 S4 board has tested just about every bulb, so I would contact him.

These are what you want in an H11<ul><li><a href="http://www.hoen-usa.com/fog.htm">http://www.hoen-usa.com/fog.htm</a</li></ul>