If i were you i would get a shift light with a nice bright light and mount it inside the vent, but keep the vent in tact, that way it will be hidden and the light will still hit you through the hole. Just mount it right next to the little swivel things in the front. The only hard part about that is getting to the vent, but since your putting the shift light in your not going to need the vent really anymore, so you can just cut into it behind the center console and seal it up. If you just wanted to replace the hole, your best bet is go get the shift light, take out the swivels and cut through the honey comb like stuff behind it just big enough for the light. then take out the center console and cut right into the vent and place it right in there, mount it up, and patch it back up. once you take off the center console you'll see how much room you have back there if your worried about that. After everything is mounted and patched up, you can make whatever you want to go around the light to make it look nice. Good luck