Clutch for 66 Barracuda Formula S

Been struggling for years to find a good clutch for my 66 Barracuda Formula S. Currently using a 10" clutch from a 1969 Plymouth Fury on my original 66 Cuda flywheel but it requires the addition of three springs going from nine to twelve springs (to get necessary clutch pressure) and the finger adjustment is difficult to get right. Any one have recommendation for a good clutch?