Hi Dave. The plumbing in my boat was copper tubing. I had some bad repairs that were unacceptable to me so i ripped it all out and started over adding and subtracting to my taste. I do not like the setup for the forward head and thus removed and patched where the old faucet was and put in new sinks and corian counters with new hardware that is more functional. I also added a fresh water washdown in the anchor locker and added a shower at the stern.