replaced this kit in place of the original.Found out the manufacturer didn't machine the tube opening deep enough to allow for water tube fron on top to drop into.Couldn't get my bottom unit bolted on,there was a gap of about 1/8 inch between bottom unit and upper.I had to drill with a flat bit 1/8 deeper into the pump upper tube housing.This wasn't a big thing to doas long as you have the right bit,otherwise one could force tighten the units together and probably crack the pump housing.Otherwise after this mod,everything went back together and pumps works good.
