On a '94 Z28, I'm getting ready to mount a water pump and I've noticed three screw holes and I don't know what they are for. What parts are supposed to screw into these three screw holes (yes, I know screws go in there)? I circled the screw holes in red on the attached image.

 

i think those are used on the vette, alternator is on the other side. far as i know dont use em on the camaro lt1.

 

Thanks, Craby.