Thanks Mr. Crosbyman for all your help and patience on this. I understand the plan to mount the pump directly over the port. The raised edges of the port cover would be gasket surfaces once machined flat. These are kind of thin (3/16 in) and any leakage here could be disastrous. I think I would have less to worry about if I begin by placing the hose connector in the existing boss and finding a spot for the pump.
I will make one more try to post a photo but not much luck with this computer.
