Well, since you're into Linux, you might want to
take a look at:
http://minnie.cs.adfa.oz.au/PUPS/
I'm not sure though if you'd be able to get any form of UNIX up on this
system.
There's a binary V6 system in the PUPS Unix archives that will run on a 11/23
with 64K and attached RL02 drives. I rescued it from a pile at a UBC SERF sale
about 4 years ago.
Note that the "Standard" V6 system doesn't support RL02's; the exact
lineage of this find hasn't been completely researched yet - and it may
never be, as the sources haven't been found.
Tim.