Installing A Radiator

[papa_smurf]

I've got a radiator for my new watercooling system that I'm thinking of mounting in the bottom 5.25 bays of my new case (CM Stacker). The problem is that the radiator is 5 3/8 in. wide, but the opening is 6in. even (roughly 13.5cm and 15cm for those who prefer metric). I was thinking of using some epoxy to attach two small pieces of metal/plastic to the sides of the radiator, and then using velcro to attach drive rails so that I could mount the radiator like a cd rom drive in the bays. I think this will work, but I'm wondering if there's a better/simpler way to do it.