With the exception of the thru hull fitting and some more PEX tubing, complete new system never installed. I have about $3400 invested in it and it will handle up to a 50' boat. I made my own heater boxes but I installed them. For cost of materials I would be willing to make them or you can buy them from them in Portsmouth or have a friend do it. It is very simple. As you might expect price is firm. Dave. I have a boat in Warrick so could bring down.
do NOT contact me with unsolicited services or offers