a company makes a kit to install the drive in permanent fashion, but can't seem to find the link right now...
helped a friend do this very thing by gutting an old dead cdrom, removed the front/guts/back and just had a steel shell. used rubber grommets and mounted the ide drive inside, then just mounted the shell like any other cdrom. cables and close. all good, quiet, and cost close to nothing. 🙂 best of luck.