I think it won't look good, because of the unusual size of the A2000 3,5' bay. On mine, the two bays are filled with classic Chinon drives (one FB-357 DD and one FB-357A HD), because anything else will leave an empty space in the bay. I can't support that.
Instead, i use a special 5,25' bay that offers house for a slim DVD (or in my case a slim bay for an internal 2,5' hard drive), one 3,5' bay (in my case a floppy drive combo with memory card slots and one USB port), and 2 more front USB ports.