Nash, me again I've racked my brain for the part number, but I was able to call a clutch supplier: Dial a clutch, (877)225-8824 and talked with Tom in tech support. He validated the 11" clutch, based on a 10.4" type bolt circle on the flywheel. It is actually a dodge cover and is available in the crowned diaphram or 3 lever borg & beck style. Once you get yours out and tell them what you are after they are one of the many that can help. I'm sure the clutchmaster guys can do it too. That's if your interested. If the O.E. clutch lasted that long under your big old feet you're probably ok with that. If you wanted to call and talk about it you can most always reach me from 7-5 central time at (417)881-0291.