Re: 1992 cobia
I know this is a late response but I just signed onto the site for the first time. I can only assume if you still are on the site they will send an alert that you question was responded to. (If you even still have the boat:facepalm

I had to take the deck cover off my 1992 22' Cobia carribbean WAC last year. the tank is aluminum and labeled at 106 gals. US
Hope this reaches you Paul: