One of several designs of aftermarket harmonic balancers.
Does any work better than OE? Maybe. Likely for racing build engines.
see also www.fiero.nl/forum/Forum2/HTML/133877.html
likely made for v6 too.
warning that made for X engine might not be exact replacement for OE stock...
if the "flange" area where pulley are mounted move in/out, even a tiny bit, then you must re-align the pulley(s) or you will
have belt problems.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)