I BOUGHT A 1977 LARSON. It's a great old boat for 45 years old. The interior needs updating. I bought some new pedestal seats to replace the old dry-rotted seats but I am afraid to drill into the floor until I know where the gas tank is in relation to where I would have to install them. The boat has really nice carpet glued down and I really don't want to tear it up. Does anyone have any information on the location of the tank? A schematic/drawing? Any help would be appreciated.