Use only milodon The mopar performance are not near as strong. Read the description. The hex on the Mopar shaft does not hold up nor does it wear that well in the bushing. Use Steel for flat tap bronze for roller cam. The mopar performance do not hold up to RPMs with a HV pump. I have bought many for over $250 from mopar never again. China junk
Milodon Oil Pump Driveshafts 21530
Milodon Oil Pump Driveshafts 21535