I ended up buying these speakers for the rear since I found them on sale. In your main post you mentioned you drilled 2 holes to mount these. Did you drill the holes in the metal part of the door itself? I've never drilled into metal let alone a car door. Mind sharing some more details such as a good drill bit size to use? I don't want to mess this up!I used the brackets that came with the Infinity REF607F for the rears