I have your answer!
Marker Comp 3000s (Yes, 15-30 DIN) from a few seasons ago, same vintage as the first Piston plate that was made 2003 or so I guess. They have hardly been used. Can provide good pics if you'd like. I am looking for $150 shipped. These are sure to not let you down, as they came off of skis that were raced on at a level right below the World Cup! Brakes are for skinny skis, so if you are buying them for teh pow boards, you'll need a new brake.