Musashi? Cool name. He is such a badass, the Chris Costa AND Chuck Norris combined of the Sengoku period if you will.
I can offer up some of my time, don't know how much I can be of help though but it's always nice to help out a person who authors maturely and well thought out threads. Plus if you have backing of a publishing company and have been shown some of the ropes and this just needs to be finished before being "taped out" and sent to the publisher for printing then it sounds like a lot of time was already invested into this.
Sending PM now.
One thing though..... what about using images that fall under Creative Commons/Stock photo licenses? If I can get some dimensions and a reference pic I could probably whip up a really simple drawing of a mechbox in AutoCAD.