Change to different condenser fan motor model?
You will need to match the RPM and the HP rating will need to match or exceed the original motor. Don't mess with "close enough" RPMs. Higher, and you will increase HP of motor needed by some unknown amount and potentially burn out motor. Or you will push the fan blade to RPMs it wasn't designed for and it could fail catastrophically. You will need a capacitor appropriate for the motor. You can use a brushless motor.