I found out today that there are two type of pump connections for the pressure line on the stock 2.4 pump. One uses a giant banjo fitting and one uses the same connection you find on the 2.5 pumps. The pumps are the same. The difference is in a piece that screws into the pump. If you end up with a banjo style you can just grab the piece from a JY instead of trying to pull the whole pump. Ohh, and watch out for the little metal cylinder and spring that is behind this piece.