Well, just drill it then. Seems like youve already made up your mind. I dont even know why you bothered asking. Geez. Some people. I'd use one of those really slim overflows like FB does.
No I havent made up my mind I just wanted to clarify the look because i realized people thought it still looked stock. I still might make it external. Might drill and put the box on the outside then drill the bottom of the box.
I'd use one of those really slim overflows like FB does.