Flywheel Question

[JDMonster]

I purchased a SR20DET out of a S15 with a 6 speed from a company. It had a Dual disk Nismo Gmax clutch in it and im going to replace it with a new clutch that is not dual disk. The flywheel it was mounted to is super thick and I wasn't sure if that flywheel is specific to the Dual Disk or if that's the standard flywheel for this motor. here are a few pics.

 

[DeanS15]

With most of these clutches you get the flywheel, that's not standard and looks a hell of a lot like the one that came with my exedy hyper.