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1970 Plymouth Superbird 426 Hemi
The 1970 Plymouth Superbird was Plymouth's Road Runner-based NASCAR homologation aero car: a production hardtop with a long nose, rear-facing fender scoops, a tall aluminum rear wing, and mandatory vinyl-roof treatment. This page focuses on cars ordered with the 426 Street Hemi, while keeping the aero package and drivetrain evidence separate so a restored or photographed car is not treated as proven original without paperwork.
The clearest identity trail is the Superbird VIN and body documentation. Aero Warriors reports the RM23 Superbird hardtop pattern, the 1970 model-year digit, Lynch Road assembly, and the R engine code for the 426 8-barrel Hemi. Hemi cars then need the same collector-grade evidence as other high-value Mopars: fender tag, broadcast sheet, original paperwork, matching engine and transmission stampings, axle evidence, and component dates.
Production totals vary by source, so the page uses the commonly cited 1,935-car Superbird total and the 135-car Hemi breakout while preserving the caveat that some lists differ. Checked references also report 77 Hemi automatics and 58 Hemi four-speeds, with TorqueFlite cars tied to a 3.55 Sure-Grip 8.75-inch axle and four-speed cars tied to a 3.54 Dana 60 Sure-Grip axle.
The Hemi Superbird is visually dramatic, but the wing, nose, decals, and show-field presentation are not enough by themselves. The public record here treats photos and videos as visual context, while the records section separates factory equipment, production figures, and authenticity markers from unresolved paint-code detail.