Take your time in this job and do it right...I did a tank replacement on my 83 tournament 19 in 2013..There are a lot good resources on this forum, including step by step instructions...make sure you replace all hoses, and double clamp them opposing ...use 3m 5200 to completely glue neoprene pads TO THE TANK anywhere the tank will be touching hull, tank enclosure, and deck to avoid future "Crevice Corrosion" The original installs on these tanks were not really very good, so if you do it right, the tank should outlive the rest of the boat.