I bought and rebuilt a 1970 GS350 motor. Didn't have any pulleys with it. Has the short water pump on it. It is going in a 1970 Skylark Custom with AC. The water pump pulley from my 1978 350 AC motor is for the long pump. The car also has power steering. Can I get a pulley for the short water pump and have everything else line up, or should I replace the water pump with the long one and use that pulley.