Need help finding type of Eichler siding

I have a question about eichler siding. Plumbers had to do a job on my house and they had to remove a large portion of the siding. In the process, unfortunately, they damaged many boards.

What I have appears to be pine panels: one large 5 inch wide panel attached to a smaller 4 1/4 one. Both are 3/8 inch thick, so when glued together, they are 3/4 inch thick. The protruding section (resulting from overlaying the planks) is 1 1/4, but when they are nailed to the wall, the groove is 1 inch (so 1/4 inch of one plank is under the other).

Does anyone know where I kind find this kind of siding? I called Groove Tech plywood siding (Jeff Nichols) and unfortunately he does not make this kind of siding.

Here are links to the photos:

http://www.flickr.com/photos/25788121@N00/4868819353/
http://www.flickr.com/photos/25788121@N00/4869433616/

Send recommendations directly to: jfcrespo AT yahoo.com

Thanks,

JF