My inside connections with spec have informed me that:
flywheel is 11lbs 2oz , has a user removable steel friction plate.
spec 2 hold 319lbs of torq
spec 3/4 hold 360lbs of torq
the info you are getting on teamzx2 is from http://www.compacttuning.com/index.html (site has been redone, does not display the info anymore)
it is incorrect!!