Can Monroe air shocks work on a 1997 Mazda MPV van?

No, Monroe air shocks are not designed to directly replace the standard shocks on a 1997 Mazda MPV. The 1997 Mazda MPV uses a standard shock absorber system, not an air suspension system. Air shocks are designed for vehicles *already equipped* with an air suspension system. Installing air shocks on a vehicle not designed for them will likely damage the vehicle's suspension and handling. You should only install shocks specifically designed for a 1997 Mazda MPV.