Hmmm. Could very well be. The only reason I say it looked like a factory hole to me is because it just clipped the upper edge of the channel and if I were to drill it by hand it seemed like it would kick the drill sideways and not put that little crescent indentation. But anything can happen. Didn’t seem like something the factory would do. Stupidest place to put a hole if you ask me. Just what you need to create another place for water to pour into the trunk. No wonder the pan was rotted out.