Ah, something we just did on ours - simple and inexpensive if that's what you are looking for. We installed a Biobidet3. You use your own toilet seat. It comes with everything else you need. You just have to T it off your cold water line and adapt to a 3/8 male compression fitting on the bidet. Comes with spacers for proper fit although we didn't need to use them. They are usually about $40 on Amazon. We got this one from Costco on line. They were selling it for $29. We had previously taken one from home to try and it was going to require a booster pump to work correctly. Our son had been using a Biobidet3 for a couple of years and when we tried that brand on the boat works great. Hope that helps.