I am pretty sure it is a custom pulley. it was build from a stock crankshaft pulley. a stock pulley (same part no.) looks like this:
http://bilder3.eazyauction.de/YourCa...lder/47495.jpg
you can see the difference in height from the pic if you compare yours.
AFAIK ASP takes a new stock pulley to build a 178 pulley.
Damned I missed the auction !
Steven
Berlin Germany