sorry, dude, but I don't think we'll be seeing cacko1.23 for c3000 any time soon; Anton Mas seems to be very busy work wise.
I would guess there are two ways to solve it
1/ unpack cacko1.23 for 3100 or 3200 and combine it with the sharp 3000 distribution, thus making a rom image and a hard disk file system
2/ hope someone else with a 3000 who understands a lot about making roms will do it... the only person I can think of who has the skills AND might have an interest in it would be Meanie.
I suppose the key is that most of the 3000's stuff is on the hard drive, so if you had a file system dump from a fresh cacko1.23 install, you could replace a lot of the hard drive files on a directory-by-directory basis.. copy to a new dir, rename old one out of the way and rename new one into place.
Provided you knew how to recover the 3000's file systems in the event of a cockup, it'd not be a massive risk.