This is the clutch it will come with:

https://www.ebay.com/itm/Genuine-Mopar-HEMI-Hellcat-clutch-pressure-plate-flywheel-assembly-FREE-SHIPPING/372211748944?epid=871611046&hash=item56a98c9050:g:iuEAAOSwkvFadGiK&vxp=mtr

As you can see the flywheel is raised with a step the disc surface.

I think it would be easier/cheaper in the long run to run something like this:

https://www.ebay.com/itm/New-Chrysler-Hemi-392-Hays-Billet-Aluminum-Flywheel/112699772891?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

Then you can use an off the shelf quicktime designed for a gen 3 hemi and run a clutch like this or step up to the rtx for closer to 1000. This clutch usually runs around 750, but somehow this seller gets them cheaper and I bought one from this seller:

https://www.ebay.com/itm/67010003-HDC-10-5-TWIN-DISC-CLUTCH-UP-TO-800HP-GM-1-1-8-X-26-SPLINE-6913-07/192463847620?hash=item2ccfbd40c4:g:BZ0AAOSwnodajwBw

It would save modifying the firewall also as I don't think one made to run a stock hellcat clutch will clear the firewill pinch weld area... but but not like you don't already have to cut the floor for the t56