I read on http://www.unix-ag.uni-kl.de/~hardware/Sun3/sun3main.html
that you can pull the mc68881 out of your 3/60 and put in a mc68882.

Has anyone tried this?  Is there any reason to believe that NetBSD
would have a problem with this?  Is it likely to make a noticeable
improvement, say when running X?

~Ken