Ok, Here's the scenario, I currently have 2 500 gph pumps on my boat. Both of which are bad. I want to upgrade to 800 gph pumps. So here's the question, Do I have to change the whole pump housing and all, or can I just buy the pump replacement that is 800 gph and will it fit in the 500 gph housing? They both have 3/4 ports so does anybody have some knowledge in this department? Thanks in advance, superfly.
