SACRAMENTO, Mar. 17 — Charles Manson apostle Sandra Good said she wanted to go to jail and told her jury she regretted “I didn’t kill somebody.”

She and fellow Manson follower Susan Murphy got their wish — convictions on charges of conspiring to mail death-threat letters to corporate executives.

In a tumultuous closing argument, Miss Good, 31-year-old former roommate of would-be presidential assassin Lynnette Fromme, said she intended to mail the letters. Then she abruptly set fire to a $100 bill with a match and told the jury: “This is your truth, your trust in faith.”

Federal marshals grabbed the burning currency, snuffed out the flames and put the charred bill on the bench of U.S. District Judge Thomas MacBride, who said nothing.

A few minutes later, she strode back to the defense table and proclaimed: “I regret I didn’t kill somebody.”

The jury of seven women and five men deliberated only 1 1/2 hours Tuesday before finding Miss Good and Miss Murphy, 33, a self-proclaimed “sister in Manson’s church,” guilty on one count of conspiracy.

Miss Good also was convicted of four counts of making threats in telephone calls shortly after Miss Fromme was arrested Sept. 5 for trying to assassinate President Ford.

The closing days of the trial were marked by Miss Good and Miss Murphy, wearing nun-like habits, repeatedly asking to be convicted and sent to prison so they could be with Miss Fromme and Manson “family” members imprisoned for the 1969 Tate-LaBianca murders in Los Angeles.

Miss Good, who still bears the white scar of an “X” she carved on her forehead six years ago to demonstrate her devotion to mass murderer Charles Manson, faces a maximum 25 years in prison and Miss Murphy five years.

During the two-week trial, the two women, who acted as their own attorneys, repeatedly said the letters were intended to force so-called corporate polluters into “cleaning up the earth.”

After the verdicts were read, neither visibly reacted. Miss Good asked that she be sentenced immediately but MacBride scheduled sentencing for April 13, saying he wanted to wait for a presentence probation report.