Aasco Lightweight Flywheel for Boxster w/ less than 500 miles, $700. It is off of my 2002 Boxster that I bought a used engine for, only to have it blow up after just a few hundred miles! My loss your gain!
I also have a Spec clutch w/ sprung disc that is matched to the Aasco Flywheel. Stage 2 clutch & pressure plate, less than 500 miles. Buy all for $1200. You'll get the whole setup for less than you can get just the Flywheel!
It drove great. You could really tell the difference as the engine revved. Much freer. There was some rattle, but if you are going to DE your car, nice upgrade.