Well I have a Melling shaft for a 351W or so its supposed to be. The problem is its too short to reach my pump. I got it from Summit but Im thinking they sent me the wrong shaft. Im sure I didnt put my pump in wrong. It can only go in one way, right?And the pickup tube can only go on one way without it keeping the oil pan from going on. From what I have measured, the shaft should be pretty darn long right?