Right. Now that you say it, that's what it is; should have see it before. Maybe a PO had a damper from an AT car and put it on even though he wasn't running an AT.Appears to be a harmonic dampener as well.
BTW, Bob: Can you give me contact info for the older aftermarket sources for the billet pulleys, if any are still selling? This will be going on a conversion to 2.2l, and I think something lighter than the damper would be better.