It is at this point that it is critical to make sure the drive is level and exactly where we want it.

I was able to check for squareness and use a level before proceeding to the next step.

With the drive ready, I can start to drill holes.  Unfortunately with the problems inherent with photographing something transparent, tinted, and reflective none of the pictures of before drilling were usable.  Essentially what I did was sight through the Plexiglas to the holes on the drive and mark their location with a marker.  Using these as a guide, I then removed the drive and proceeded to drill.

As you may or may not be able to tell, I drilled holes for the screws and then used a larger bit to countersink them.  This is to allow the screws to sit flush with the case when the drive is mounted.

It was at this point where I discovered my initial plan for fans was not going to work.  I was going to have to drill out a 80mm fan hole in the plexi without the benefit of a laser.  After figuring out where I wanted the fan, I found the center of that point and used the same drill bit to drill a pilot hole.