Have a look at John Vanderheidens site. He built a huge model from scratch.
It should be no problem to scale the plans and model down to something mangable and the scale of your choice.
John has created a great website on the how to's.
http://www.hrfsbo.com/sub/index.html
And stuffing tubes
http://www.rcuniverse.com/forum/m_3149398/tm.htm