Adding overflows to glass tanks

[cyber_ecco]

Does anyone know who in the lower mainland drills and installs overflows in glass tanks and how much it costs roughly. Thinking of getting a glass tanks drilled with 2 1.5" drains in the corners, but I want a glass box built around it so I don't see it. Not interested in any ghetto home made types as I can do that myself and I find it looks ugly. I also can't drain to the back of the tank as its flush against a wall so it has to drain underneath the tank. I'm just wondering if I should have a tank drilled or is it better just to get a new one. Thanks.