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The front end was restyled for 1979, which also marked the 10th anniversary of the Trans Am. A limited-edition anniversary package was made available: platinum silver paint with charcoal gray upper paint accents and mirrored t-tops, and a special interior featuring silver leather seats with custom-embroidered Firebird emblems and aircraft-inspired red lighting for the gauges.
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The 10th-anniversary cars also featured special 10th-anniversary decals, including a Firebird hood decal that extended off of the hood and onto the front fenders. Pontiac produced 7,500 10th anniversary cars, of which 1,817 were equipped with the high-output Pontiac T/A 6.6 W72 400 engine, the last of the line of the Pontiac large displacement V8 engines (and coupled with the four-speed Borg Warner Super T-10 manual transmission).
The only option on these cars was the engine (the 400 was not certified for California, nor was cruise control available with it), which dictated the transmission and the gear ratio (3.23 on the 400 cars, 2.73 on the cars with the Oldsmobile-produced 403 engine and the TH350 automatic transmission).