i've got 2 fuel tanks-permanent mount.they're 35 gallon built by patriot marine.tanks are epoxy coated,the correct way. approx 77" long and they're tapered from approx 16" to 8"...the tanks came from a 31 bertram-were the auxilliary fuel tanks-repowered with diesels,didn't need them anymore.they're in excellent condition...drop me a line if you're interested...