Weirdest herky jerkey clutch

dealer
HD disc #P4876911 or Std disc #P4529136 either should work behind a 5.9
I like my CF diaphragm pressure plate, but it is probably more than I need. To it's credit it has well over 100,000 miles and is as solid and smooth today as the day I installed it. So it is down to about less than $50Cad per year. Or half that in USD