I have recently removed the entire original 20 years old freshwater system on Bremer Speck and replaced everything and I mean everything. I went with PEX and Sea Tech quick connect fittings. It was a relatively easy job. The biggest probelm was to run the PEX tubing from A to B because it does not easily bend, and bend it must. I did not go with a prefabricated water manifold written about a f ew weeks ago. Instead, I used the quick connect fittings to create my own mini manifold. I do have a zillion pictures. So if somebody is really interested PM me and I will send them.