WRENCH CHAMP: A 17-year-old North Hollywood girl...

WRENCH CHAMP: A 17-year-old North Hollywood girl who didn’t want to be helpless if her car conked out became such an ace mechanic that she will represent the state in a national student auto technology competition (B3). Barbara Duffy (above) won with spark plug skills. . . . State organizers said her triumph appeared unprecedented, noting that 95% of the participants are boys.