Morphix has a KDE3.1 test module up (in iso form , ready to burn ) at 275megs (full KDE install with the morphix installer and some extra's, but as far as i can remeber no devel libs included, it's a GUI module). Would really like some feedback, but if you want a stable KDE3.1 i would suggest eadz' KnoppixKDE.

Anyway, for more info check www.morphix.org or the mirror. I dont have any specific info on KDE up yet, do have a page on the wiki there reserved for feedback purposes

And no, i won't hack up Morphix base for a single distro, that would be exactly the opposite of what morphix is for