I'm looking at upgrading my 2000 seafarer with a Marlin or sailfish. Price range is putting me at 02-08 years. I've come across very few that have had the fuel tanks replaced already. But I know 15-20year old hulls have tank replacements on the horizon. How much does new fuel tanks affect the asking price, what is it worth? Say most boats are around 80k, a boat with a new fuel tank is selling for 85k, is it worth it? Thanks!!