If you spent that amount of money on a nice twin disc why not spend the extra hundred bucks and get a new flywheel?
I wouldn't want to re-use the stock flywheel with a clutch like that even if is "possible". And even if you did, you would want to have it machined to a flat surface... that is, if it still has enough run out.
So the money you would spend to have the stock flywheel machined... Take that, add a couple bucks and get yourself a new flywheel.
2006 GTO M6
Motor - Stock with Vararam
Bunch of suspension
Bunch of brakes
12.81 @ 110.6 2.03 60'