I bet the rubber hose is just a bit shorter on mine. It measures in at about 10”.I was thinking maybe the V6 accessories sit a little farther back than the V8, so the V6 line might be longer? Not sure as I've never measured that, just a thought.
Being low pressure, you could always add a length of hard line to the existing rubber, clamp it, and install another piece on the other end that goes to the pump. Not ideal, would look kind of ugly.