Inline Tube (I-3-6) Factory Assembly Manual for 1980 Pontiac Firebird 80 Pontiac, Firebird, Trans Am, Factory Assembly Manual. 1 book 1980 Trans Am factory assembly manual that was used on the assembly line to build your car has hundreds of assembly diagrams, charts and information shows how all the parts & assemblies go on the car and in the order they went on These manuals are a must if you have a car taken apart or want your car to be concours correct