Not necessarily. While both are Chrysler minivans, the transmissions used in 1995 and 2000 Caravans varied depending on engine size and other options. There's no guarantee of compatibility without knowing the specific transmission type codes (usually found on a tag on the transmission itself) for both vehicles. Even if the transmission *appears* similar, internal components, bolt patterns, and computer interfaces might be different, leading to installation problems or failure.
In short: you absolutely need to verify the transmission codes before assuming compatibility. A parts store or a mechanic specializing in transmissions can help determine the correct transmission codes and whether they are interchangeable.