Umm I had a CC twin disk clutch when I was using the 5 speed trans. You just have to get the smaller splined disks. The rest of the setup is for the rwd sr20 except for the throwout bearing which was a bearing done by CC as well.
The setup is now offered for the 6 speed swap as well which uses a two piece flywheel with basicly an extended plate that is bolted and then flywheel rebalanced with it and of course the proper throwout bearing that has to be pressed into the stock throwout bearing housing. No biggie an can be done without a press easily.
I worked with Dan and Melissa at comp clutch on the 6 speed setup.
Again the rwd setup will work with the 18 spline smaller hub disk and proper thowout bearing.
I sold the old throwout bearing to a fellow forum member and have pics of what it looks like if the throwout bearing is an issue.