Seamaster 27 Flybridge Rebuild with twin Etec

[Brett]

Looks like a fantastic boat. Any ideas how thick the transom is to adequately support the bracket and twins? I'm in the middle of replacing the transom on a 27' and can only get 1.5" of marine ply between the inside of the skin and the stringers. I could add additional thickness above the stringers (where the bracket bolts) or add some additional sheets and just template it around the stringers another inch or so if needed. Not too many 27' with a bracket to find advice.