I have a Hays set (diaphram not borg and beck or long) and I like it. It's on an O/T V engine but it holds at whatever RPM you let the clutch out and you can push the pedal down by hand (so it's REAL easy on the leg). IIRC they bill it as a 27 or 2800LB pressure plate. It's a Hays 95-201 set (PP, Clutch disc and T/O bearing) if you're interested. Probably wouldn't fit your application, but they're bound to have something that will work.
I looked it up, Hays claims a static load of 2750Lb with the pressure plate in that kit.
