I have an '87 39-2. The boat was the original 2 head design. The PO had the head and sink removed from the forward head and installed shelving for storage. Very useful upgrade. However, the forward waste tank remains under the Vberth. I have contemplated removing, cleaning and if possible, re-purposing as an on board fuel storage tank with a transfer pump back to the main fuel tank. Although, unless I start cruising long distances, I could not use that much fuel. The main tank is 35 gal and I only fill once a year. Still, nice to know I can expand if the opportunity ever presents it's self.