I had the same problem, and my solution was rather clever, if I do say so myself...
Grab some non-copperized Proto(R) board {Veroboard(R) for the UK crowd}, and make it big enough to mount a drive with about .5" (13mm) overlap.
Find a PC ISA card that has a removable bracket (modem, sound, etc.). Trace the card's outline onto the blank board, and cut out, filing it smooth afterwards. Now, measure out the mounting holes for the drive and bracket. When done, you should have a card that'll pop into an unused ISA slot in the A2000 with mounting holes for the drive (the bracket just anchors the top part of the card). DO NOT use a card with copper on it! We don't want anything shorting out the power rails!
Run a pigtail for the power, and slap the SCSI cable in. Have fun.
Oh, there's enough room in there for more than one drive, but don't get too carried away and overload your power supply
banzai
