Click on the FastLane button on top of this page. It'll take you to a place where you can get all you need for your vehicle.
Exchange or rebuild?... What you could do is take apart the calipers and assess their condition. If you find pitting corrosion on the critical slide surfaces or frozen bleeder screws, then you're forced to exchange calipers. Otherwise you can rebuild. Another factor to consider is how much you save by rebuilding yourself. For some cars it's not much savings.
95 E320 Cabriolet, 131K