550 shipped. Bought it and have another deal in the works that requires me to sell the miata. never installed. 13.5lb flywheel.
http://www.flyinmiata.com/index.php?...005%20%2010.30

I'm going to ship it back tomorrow if there is not takers, but if you were looking to get a clutch now is the time to save a few bucks plus shipping for a brand new part.
Thanks,
-Brad