Indeed Jeff. As you imply, each of the lock units is however unique to its position on the car, i.e. front-left, front-right, rear-left and rear-right. (Front locks only, will also differ between LHD/RHD cars). There are two version of rear locks however, with or without the child-lock built in.
Here is the child-lock tab to identify the version:
ChildLock1.jpg
David