Buying plans for stock power catamaran

[JonathanCole]

I was looking at all of the really great boats at Morelli and Melvin
http://www.morrellimelvin.com/powerboats.html
and checking out their list of stock plans, which are fairly extensive, but they did not quite have the length (16 meter) and beam (6 meter) that I am looking for. Can anyone suggest any other quality design firms that offer Coast Guard approved plans for power cats. I would like to get or build a stripped down super efficient power cat for my solar boat project and then outfit it it with custom equipment and features. Any leads would be appreciated for stock plans in this size range.