When it comes time to replace my waterpump, I'll be using the Ford replacement pump w/ white impeller. Hell, that may even be what's on my car now, as nobody knows for sure when Ford started putting the white impellar pumps on from the factory.
I just don't think going to a metal impellar is the answer. Sure you get a bullitproof pump, but what sh!t (that would normally smash a plastic impellar) could you possibly end up circulating through your cooling system. At least when the plastic impellar goes, you know RIGHT AWAY. I'll stick with the redesigned pump.
(puts on flame retardent suit...
)
