There used to be this record shop near me (forgot the name). And they had a nice Rap section, which mostly consisted of Bay Area artists/groups. I used to go there alot back in the day, from 1995-2000 (when they closed), and not once did I see a Could Nine album. And this place used to get lots of shit too. So my guess is, it was never released on vinyl. I ain't never seen one online either.