Not that I know of. I've spent a lot of time 
looking at Tenchi cels and I have never seen 
one for sale. Also never seen one of both 
Washu and Ryoko in Ryoko's ship. That 
doesn't mean they aren't out there, though; 
keep the faith.

Ayaka

BTW, should you find one, make sure you post 
a scan here! ^_^