Door Lock Actuators 1993 GM

Who engineered the retainer for the clip that holds the door lock actuators, you know that part on outside trailing edge of door. How do you remove the clip and actuator to replace with a new one, is this retainer pop riveted and must be drilled out and then re-riveted or bolted in place? I have a new actuator and t comes with it's own clip but I need to get the old clip out.

Who engineered the retainer for the clip that holds the door lock actuators, you know that part on outside trailing edge of door. How do you remove the clip and actuator to replace with a new one, is this retainer pop riveted and must be drilled out and then re-riveted or bolted in place? I have a new actuator and t comes with it's own clip but I need to get the old clip out.
the last time i changed one i drilled out the rivet and used a small bolt with washers to hold it in place as there is no room to get hands in the door to undo the clip.