Can anyone tell me what power steering unit here is the 6 or 8 cylinder one? I think it's the darker unit, but not sure? I need to restore one of the units for the V8 car I have and both came with it. I want to say that the 5th pictures down tells me that is the 8 cylinder unit? The car was originally a 6 cylinder car, but is all changed over by PO. Thanks for any input.