I picked up two full tower AT cases and plan to use them to house a couple of 486/100MHz systems. I'm guessing these particular cases harken from the days of the 1.2MB 5 1/4" floppy drives because all of the external bays are 5 1/4." Can anyone suggest where I can find a couple bay covers with 3 1/2" openings? I realize I could cut openings into ordinary bay covers but I'd rather avoid that if possible.)