Another question I failed to ask, is how is it that you are replacing your FW tank, when it is still in good enough shape to hold water? Is it just funky inside? If so, I would suggst that instead of buying a brand new FW tank, buy a couple of grey tanks that you can use without removing entire cross members, and just clean that funky FW tank out. Yes, they are hard to clean. I installed a marine "deck port" in the top of my FW tank so that I can give it a much mor thorough clean out. Might be an option for you.