Stringer problems!

[dearl]

I opened the floor up on my 72 GW and I have termites, bad! I can already see replacing all the stringers out to 8' from the transom! I am removing the inboard so i can pprobably beef up everything to handle what i plan on powering this boat with. Whats everyones opinion on what to use to rebuild stringers with? I want to get pics of everything before i go any further, so I'll get some stuff posted soon.