If you're a smart guy you can figure out how to replace the round lights with any kind of fog lights. Since I'm not that smart
I used Moncha's write up to get the wiriing right and to help me wire the factory switch (that I got from Merlin). It's a great write up, easy to follow and can be adapted for any lights.
Have fun and take pictures of the results.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless