Start with the make
Coverage is even across the three. Each hub explains official VIN format and location, the body or fender tag, engine stamps, and date codes, with sources. A decode tells you what the characters mean. It is not a matching-numbers check, and plates can be swapped or reproduced.
GM
Chevelle, Camaro, Nova, GTO, and other GM muscle: 13-character VINs, Fisher cowl/trim tags, suffix codes, and partial VINs.
GM identification hubFord
11-character VINs, door data plates, the 1968 passenger-side dash tag, and 1968-and-later block stamps — plus Marti documentation.
Ford identification hubMopar
13-digit VINs, fender tags read left to right and bottom to top, body stampings, and late-1960s engine and transmission VIN stamps.
Mopar identification hubFirst guide
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A multi-make numbers-matching and identification checklist
A field sequence for GM, Ford, and Mopar: official VIN, body tag, hidden stamps, engine and transmission dates, paperwork, and red flags. Every location and format is cited.