B6 S4 Front Bumper Grills

So I’m looking to improve the appearance of the front end of my car. My plans are to replace all of the grills in the front bumper with mesh grills. For the upper grill, I’m most likely going to buy one off ebay unless somebody jumps in here and has a reason I shouldn’t. Here’s what I’m talking about:

http://i.ebayimg.com/00/s/NzY4WDg1MA==/z/ilUAAMXQKLdR4I8g/$T2eC16R,!zcE9s4g3IoPBR4I8gMyg!~~60_3.JPG

http://www.ebay.com/itm/121095504680?redirect=mobile
Then for the lower grill, I think the only route is a DIY. Found one on AZ that was pretty easy. Finally, I’d like to replace the stock fog light grills with these that I found on genuineaudiparts.com. They’re 3 or 4 here:

http://genuineaudiparts.com/media/images/oe/collision/1/1397007.gif

http://genuineaudiparts.com/parts/2004/Audi/S4/Base?siteid=214407&vehicleid=173992&diagram=1397007

My question is, what is the difference between 3 and 4? And my other question is, will these fit my car? Using the sketches to compare the location of the hole for the fog light, it looks like they may not fit because they’re designed a little differently. Thanks in advance for the help.

I think the mesh are off the Eurosport and will not be a direct fit. Not sure on difference but inside looks a bit different.

3 and 4 are both ultrasport. One is US and one is Euro fitment. One of the two has open grills and one is only partially open. Pretty sure US spec is only open in the center if the part on the opposite side of the fog light.

Ultrasport will not, ever fit in the S4 without some serious hacking. The opening is much bigger and it’s shaped differently. I made some for my A4 back in the day. I used plastic mesh from Home Depot.

That’s kind of what I figured. Looks like a DIY jib again. Although, depending how they look with the mesh upper and lower grill, I may just keep them as is.