I had to get side view mirrors for my jeep comanche because when i bought it, it didnt have any. I bought them and there is one problem they dont have threading on the inside of the holes that hold the mirror on the jeep. So what i need to know is the size tap i should use for it. thanks all

If u got the screws then run them through a die till it mayches and go from there

Fab and tap a backing plate, if you thread sheet metal the wind will blow them off.