You could make your own template. Put a piece of paper on top of the bottom of your drive. Poke holes in the paper where the screw holes are on the drive. Now you can use that template to mark the spots to drill on your system case.
I'm planning on repositioning the hard drives inside my htpc build and I want to put 2 on the bottom (floor) of the case, which is made of steel. I would like to print a template of the drive to line up where I need to drill to mount the drive.
Drives are standard laptop 2.5" drives.
Few people understand the psychology of dealing with a highway traffic cop. A normal speeder will panic and immediately pull over to the side. This is wrong. It arouses contempt in the cop heart. Make the bastard chase you. He will follow.