Hays Street/Strip Clutch 85-301

To me, I'd rather not have the marcel. It doesn't do anything and it makes the disc materiel flex. I run a sintered iron unsprung hub on the street and you'd never know it as it doesn't chatter. Smooth as butter.

I'd be concerned more about how much plate load you have and make sure it doesn't have any centrifugal assist.

Take it to a local clutch shop, verify finger height with that disc, make sure it has no roller assist and set it at 2400 pounds of static plate load and run it.