If you use a 99or 2000 6 speed it will work fine. The 6 speed in the 01 up trucks was for the HO trucks and has the larger input.
Now, should you find a screaming deal on a 02 or 04 6 speed, we can order a different friction plate from South bend for a few bucks and have everything be correct, providing the pressure plate is in good enough condition.
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