Sequential circuits samplers

Hello, 
    Last night I managed to get my friend to agree to a trade for his
512k upgrade and 4.3b OS EPROM.  Now I am trying to find information
for the 8 outputs upgrade.  I would like to avoid paying $40 for some
jacks that I can easily buy for a few dollars each since I would have
to cut traces and drill the holes anyway.

Does anyone still have the assembly/upgrade papers from when they used
the official upgrade (so I know what is on the board)?  In return for
you submitting this information to the group, then I could find a way
to submit scans of the information that I have for the 512k memory
upgrade/installation in the case that someone wants to try and build
their own in the future.  

I have some Op amp chips lying around so I could go to radioshack and
make the board with breadboard, but I can't do this if I don't know
what is on there or how it goes on.

I may break down and buy the official upgrade, but I am trying to feel
it out first and see if I can use up some of the parts I have here.

Thanks.