There is a guy, Jeff Nichols, that produces authentic Eichler siding. He lives in the East Bay, advertises on this site, and will deliver. What some have done is to have a fence contractor build the the fence and then cover it with Eichler siding. This is what we tried to do, although we did it before finding out about the availabitly of authentic siding. Our fence guy found siding that was similar, but not exact, and used it. It looks pretty good and I can e-mail you photos, if interested. It would at least give you a sense for the possiblitites.
Some photos of your siding would be great. I've exchange email with Jeff who says you simply need to coordiante between your fence contractor and him so that the fence is designed to accomodate the siding. Not a big deal but something you need to do in advance.
My email is firstname.lastname@example.org for the photos.