What other models will these fit? I have a set and need to know who I can market them to.

TIA.

I've got a 99 A6 Avant. Love the car, hate the weak brakes.

From the research I've done, front brakes from a similar vintage A8 bolt on and upgraded rears come from the S4.

The tech article is here:
<a href="http://www.audiworld.com/tech/wheel1.shtml">http://www.audiworld.com/tech/wheel1.shtml</a>

If your car uses HP2 or HP2-like calipers those don't work for me...

So, if anyone who knows can shed some light on your S6 brakes fitting my A6, then we both may be in business.

You wouldn't happen to live in Colorado, would you?

They are HP2's.

<a href="http://forums.audiworld.com/brakes/msgs/103.phtml">http://forums.audiworld.com/brakes/msgs/103.phtml</a>