280z Auto Door Locks from Motorsport

Has anyone installed the Automatic door lock mechanizm from MotorSport? I purchased the easy install unit....and it might have been, if I would be able to find the room for the actuator,being able to place the door panel back in. There is a hole in the interior door that kinda has room to install the actuator, but the door panel will not fit back in place. If anyone has purchased this unit and had success with it ... please give me some pointers. The reason I went with automatic is because my key locks do not work and I figured oh well, if I'm gonna spend the money why not automatic.