Hello Vegas,
I agree with (The Sloop) Johnb. For reference take a few pictures of the fittings and tubes that are there now so you can buy reasonable replacements and get them back into the same positions. Close the thru hull valves and gently remove the old stuff. Except for the need to fit into some tight places while doing some unnamed Yoga positions it should be a fairly easy replacement. If I were in Cape Coral I would drive to Naples and help you. Phil