I'm going to go out on a limb here and guess that an SX1200, 20 gallon foam fuel cell and -12 hard lines plus fittings are not in the same cost arena as putting in a walmart pump, slapping together a couple of fittings and some lines or better yet just swapping the return and supply line. Cheap is not always right but sometimes it’s good enough. But for this hobby right is almost never cheap.