A co-defendant in the Victoria Sellers drug ring case was found guilty in a Newark, N.J., federal court of conspiracy to possess and sell cocaine. Curtis (Zippy) Hunt, 25, of Venice, Calif., showed little reaction as the jury announced the unanimous verdict. He faces a maximum term of 20 years in prison and a $250,000 fine when sentenced July 14. Hunt was one of six people arrested for running a drug ring that originated in Columbia and sold cocaine on both the East and West Coasts. The late actor Peter Sellers’ 21-year-old daughter, who posed nude for the April issue of Playboy magazine, pleaded guilty last week and has been testifying for the government in exchange for a lighter sentence.