I’ve got an industrial block, so it came with a direct drive fan pulley. Fan pulley - 4 holes Fan pulley hub - 4 holes - the “nub” is not threaded Fan - 8 holes I’m trying to install a fan clutch, most the ones I’ve seen have a large nut style mounted to the fan pulley hub. My fan pulley hub is 4 holes and no thread, however, I can find rockauto has a 6 hole with threaded nub. That part solves, but then I need to get a 6 hole pulley, and I cannot find a part number for it. Does anyone have a part number for 6 hole pulley? It seems I can only find 4 hole pulleys for sale like the one I already have