Brand new Rubber gearbox mount for the first gen Camaro & Firebird as listed below, fits a wide variety of year models for automatic Transmissions.... the main ID is it's two bolts to the gearbox and two from the cross member into the  mount are ELONGATED.. 

  ALSO fits various MANUAL trans models.

 ALso consider the better patended Energy Suspension mount.# 31108 double the cost but linked here to help you if you want the best.

Listed as fitting: