1979 Pontiac Trans Am 10th Anniversary Edition. The 1979 Pontiac Firebird Trans Am and 10th Anniversary Trans Am debuted a new look for these awesome muscle cars. They received dramatic front-and-rear facelifts. That included a no-grille appearance in an elongated nose, flanked by inset quad rectangular headlamps. A urethane casting held the recessed head-lamps, with horizontal louvers.