I have a very slightly used Centerforce Dual Friction 10.5" clutch, Centerforce billet steel 50 oz flywheel. Both are in excellent condition.
These came with a transmission that I bought but I can't use them because my engine is 28oz and I already have a new clutch.
What I was told from the transmission shop that it came from was that a customer had them installed in a Fox body Mustang and then didn't pay so they were removed with less than 20 km on them.
$600 firm for everything. Less than half the price of brand new.