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1971 Pontiac Firebird Trans Am 455 HO
The 1971 Pontiac Firebird Trans Am 455 HO is the factory Trans Am path, not a Formula with added stripes. The page covers the 22887 Trans Am package with the LS5 455 HO listed as standard equipment, a shaker-style rear-facing cold-air hood system, spoilers, fender air extractors, Honeycomb wheel context, Rally gauges, Safe-T-Track, F60-15 tires, and Trans Am identification.
Reviewed 1971 Firebird references report 2,116 Trans Am 455 HO cars: 885 manual and 1,231 automatic. The same source family distinguishes the Trans Am from Formula 455 HO cars, which matters because the Formula could use a twin-scoop hood and optional 455 HO equipment but did not carry the full Trans Am body, stripe, and shaker package.
The best authentication path is paperwork first, then matching component evidence. A credible car should align around Trans Am model identity, LS5 455 HO engine evidence, carburetor and Ram Air hardware, M22 or Turbo Hydra-matic transmission path, Safe-T-Track axle context, two-color paint and stripe treatment, interior trim, and the 1971 rectangular-grille model-year cue.