Eli,
I know ur prolly gonna hate me but im going to be outta town this weekend to chicago so the next time i can go to one is next next friday. If u really need em PM me and ill give u my cell number and we can meet up sometime. As for getting a 40" port, mine is 63" by 3". How is it 63" u ask? it wraps around the back of the box inside, which also acts as a brace.

These plans were made custom for my 15" magnum. 4 cu/ft tuned to 28 hz. If you need box designs, Jmac over on the caraudio.com forums will make them for you for 5" Just tell him what u want. He draws out all the diagrams and tells u all the lengths you need to cut. its nice!