IMHO, if you intend to increase the power levels on a new HD, a complete aftermarket clutch will be required if you want it to last! There are enough failures of the powdered metal clutch hub splines to indicate they really can't handle STOCK power levels.
My buds '12 Classic has an upgraded clutch plate, a 106kit, showing 97hp/112t. Now its been sitting for 2 weeks while the parts (all aftermarket) come in to fix the transmission. The clutch hub is likely done too!
You want to know the saddest part, I believe the '13 and up clutches aren't as strong as his!! 40K (klms). The comp has already been replaced once, the second is clunking again.
He's upset, claims he'll sell it, buy an Indian (we'll see). fwiw twinotter