The HB is a for sure. Nothing wrong with the pulleys I have now but the cvf ones are lighter and will look cleaner. The pan on the other hand i sorta need because mine leaks like a seave. Im on my 3rd gasket and it still leaks. So if I go by necessity I probably should get the pan and HB. But I really want the pulleys haha and since I have to disassemble the front of the engine anyway now would be the time to replace them