IMO the A2000 case would be an awkward choise for a modern mobo!
Its NOT ATX; and the PSU-5¼" shelf on the right is not easy to remove.
The twin-floppy stage on top of that is not much easier!
I keep my Hard Drives in a separate Tower Case as, removing the monitor, the screws at the lower corners, that PSU-5¼" shelf ...
just to put in or take out a drive gets to be TOO much!
I don't even use the rear Power-switch -- but switch it at the wall!
Modern Mac Boxes are some of the easiest Cases for internal access.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The A1 -- Its a small step for a computer - a BIG step for AmigaKind!