1. The VIN (Vehicle Identification Number): This is the most reliable method. The VIN will contain a code that explicitly identifies it as an SS. The location of the VIN varies slightly depending on the body style (2-door hardtop, 4-door hardtop, convertible, etc.). Look for it on the dashboard, typically on the driver's side, or on the firewall. A qualified mechanic or restoration shop can help you decode the VIN if you're unsure.
2. The Trim Tag (or Data Plate): This tag is usually located on the driver's side doorjamb. It provides a wealth of information about your car's specifications, including the trim level. Look for "SS" explicitly mentioned or codes that indicate the Super Sport package. This might also show option codes corresponding to SS features.
3. Exterior Visual Clues (Less Reliable): These are helpful but shouldn't be relied upon alone because many parts could have been added or changed over time. Look for:
* SS badging: Look for "Super Sport" emblems on the front fenders or rear. However, these can be added aftermarket, so their presence isn't conclusive.
* Specific trim and exterior details: SS models often had unique features, like specific wheel covers, grille, and taillights. Compare your car's features to known 1963 Impala SS photos and specifications. This is tricky because even non-SS models varied in their features.
* Performance-oriented features: Though not always exclusive to the SS, items like a dual exhaust, special suspension, or a higher-performance engine could suggest an SS. However, many of these were available as options for other Impalas.
4. Build Sheet (Rare but definitive): If the original build sheet for your car still exists, it's the most definitive proof of its origin. This is a document created at the factory listing all the options and specifications of the vehicle. Unfortunately, build sheets are rarely found.
In short: The VIN and the trim tag are your best bets. Visual clues can offer hints, but they are not reliable indicators on their own. If possible, consulting with a Chevrolet Impala expert or a classic car restoration specialist is highly recommended for definitive identification. They can often help decipher the VIN and trim tag details.
