1978 20ft Seacraft rebuild new Stringers & floor

[Happi1fla]

Hi, New to Classic Seacraft 1st visit, Great Information, and input from all owners /members Have owned this one since 1990 , Had very few problems with this boat run the rivers, lakes and ocean for many years repowered with a new transom and Outboard earlier this year . Now the time has come to replace my stringers and floor , with a inspection/access hole cut found stringers to be Rotten , this was expected for a nearly thirty year old boat. Would like to know if there are drawings or pic's of this stringer system , the long rectangular gas tank sits inside a fiberglass shell
The length of the boat with no structure underneath, The stringers are on the side of tank but not certain of how many layers or how deep .

Please help I was Nauseous and sick after cutting into the deck with my Circular saw. Have many pic's would like to send a couple.


Thank you'

John