On your model. Does it come with a new white bottom, and does it fit, or does it come with just motor mount bracket?
Does new pump fit throu the bubble plate, and does nut fit on new pump?
Going on memory, was a few years ago, the new venturi is tight but fits. It's gotta be tight because the motor is inside bubble chamber. There's no plate separating the pump as there is on lotsa other skimmers.