Hi.  I've written a crude Sun 2 emulator that can run NetBSD and is 
ready for some alpha testing.  Instructions on how to download, build, 
and use it are at:

http://theory.lcs.mit.edu/~fredette/tme/index.html

The code is very rough and the distribution isn't user-friendly, but
if you follow the instructions carefully and have experience running
diskless NetBSD systems, you just might end up with an emulated Sun 2
Multibus system.

-- 
Matt Fredette