The tabs are part of the headlight housing and they are broken off. Even if they do sell new tabs, how would you secure the tabs to the housing? Crazy glue? Will that hold? It's like taking a pencil and snap it in two...sure you got the 2 pieces, but how can you make it whole again?

Take a look at your left headlight housing. There are 2 bolts securing the top part of the light housing to the car. Imagine if those 2 plastic tabs where the bolts go through are broken off, how would you secure the top of the light assembly to the car? How would you attach the new tabs (if they sell them) to the light housing to replace the broken tabs?