There's the standards, McLeod, Ram, etc, then there's the real good race clutch builders...Advanced Clutches (NOT Advanced technologies), https://www.advancedclutches.com. Contact Rob Youngblood (owner) for help, he's good!
What kind of clutch is it? That will dictate the answer. RAM charges 145 for pp rebuild and 145 for a new disc. I use the stoutest RAM Borg and Beck clutch that is offered with good results.