Yes, 1/4 inch carbide bit with a 24v hand drill. The steel is softer than it looks, so there is that anyways. I did have to drill from both sides. It was a bit of work but it only took 15 minutes or so.
A stainless thick wall tube might work, bit I’m not sure how the housing is constructed. There may be ridges inside. I felt it was safer to just drill it.