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I would think you could use your current clutch. I looked up a few and they list the same specs, 10 tooth spline, 1-1/16" diameter and a B50m pilot bushing. They had different part numbers, but all the same info. When I did my ZF swap, I used the flywheel from the donor truck and got a clutch set for the truck the tranny came from. If you have a 10" clutch though, now would be a good time to step up to an 11" clutch.
Thats what I was wanting to hear. My current clutch is only about 2 years old, so if I can leave it on, that would make things easier. This truck was a auto, and i switched it to manual, and at that time I put in a 11" flywheel.