Call
Ft Wayne Clutch and get a 12 1/4" flywheel and one of their rebuilt Kevlar clutch kits to go with it ( and even though the kit comes with a pilot bearing , spend a few extra and get a kevlar pilot bushing , it saves some headaches, and the thing will outlast the clutch, so no worries about itgiving out on you. That clutch setup is sweet. Will pull anything but with that friction facing it doesn't require a heavily sprung pressure plate so it's easy on the leg. with my arthritis I had to have something easy on my knee or i was going to have to put a slushbox in, and they fixed me up. This thing feels like driving a car, but I can pull 10k and 14k trailers without batting an eye

The 12 1/4' setup gives you twice as many springs in the center as an 11" so it pretty well eliminates rolover noise