Your best bet for finding interchangeable doors is to:
* Check a parts database: Sites like RockAuto, Car-Part.com, or similar online auto parts retailers allow you to specify the year, make, model, and body style (wagon) and search for used or new doors. These databases often show compatible parts from similar-year vehicles. However, *always double-check compatibility notes* as they are crucial.
* Consult a salvage yard: Salvage yards specializing in GM vehicles from the early 1990s are a great resource. They can often tell you what will fit based on what they have in stock.
Important Considerations:
* Sedan vs. Wagon: Doors from a Caprice sedan will *not* be directly interchangeable with a wagon. The roofline and overall body structure differ significantly.
* Year: While doors from a 1990 or 1992 Caprice *might* have some similarities, there could still be subtle differences. 1991 is the most precise match.
* Specific features: Power windows, locks, and mirrors can vary. You'll want to ensure all features are compatible, or be prepared for additional work to adapt them.
In short, there isn't a simple "these doors will fit" answer. You need to use the resources above to determine the most compatible doors for your specific 1991 Chevy Caprice wagon.
