Help! Are these MB hydro followers?

http://www.qualityvwparts.com/ltlftr.html

i'm talking about the lightweight ones, obviously.

bunch of us vw guys are wondering as our aftermarket suppliers won't tell... there's a rumor that they're mercedes, perhaps from the 2.3-16v's? any ideas?

thanks guys!
james

from forums.vwvortex.com
http://forums.vwvortex.com/zerothread?id=1081010