I Thanks you The_Alaska_Man for this push.
Some times people needs that some one else put a firecracker in its a*s to get moving.
Ok: In a very quick search I found in Amazon a Paperback book by Stan Piet and Al Raithel titled Martin P6M SeaMaster (About US$40), where the Authors states that inside there are blue prints (?) for the P6M-1 and P6M-2 (It seems that these two where built and went extensive tests, (I think that I read many years ago that both crashed on those tests), but about 10 more (Wiki) were built) and also shows pictures of the Cockpit, and in other search the Following, Top Speed: 633 mph (1019 kph), Wingspan: 103 feet (31m), Length: 134 feet (41 m) and its maiden flight date July 14th, 1955: There is also the page in wikipedia where data about the the four jet engines, wikipedia also has a short history and the previous data and more about performance and armament, and cites the above mentioned book as a reference. Any one can read the wiki article and, seaplanes lovers, should read: quite interesting, but the book is something else.
I presume that this is just a glimpse of what is needed, more over when the mentioned blue prints will cost money and later could prove insufficient for the design required to fit in game.
Thanks The_Alaska_Man for your help and interest.
Humberto