[mopar5150]

I enjoy this sort of work. I am doing a 2x1ghz V12 O350 today and will do a write up on that project as well.

I do remember converting Octane graphics boards to the Origin 2000 and as I recall you only need the correct latches to make it work. I think a notch on the back plate was required to clear the latch lever. I will need to look at my octane and some photos of the O2K boards to help me remember.
I have about 20 pounds of Origin2k and octane metal parts and latches, Once you figure out what you need I will send you some parts.