Unfortunately it's not as simple as replacing the backplate. ATX towers have a small rectangular backplate which presses in to the back of the case. These are easily replaceable. However, this backplate is too short to fit all of the Amiga's ports on it. Therefore the entire back of the case would have to be removed and a new one fitted.
It would be impossible to manufacture a standard replacement back panel as all ATX cases are different. Also, the back panel would probably be welded or riveted, or worse the entire tower would be a single sheet of metal which is folded to make the correct shape. This would make removal of the back of the tower impossible without damaging the rest of the case.
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moto
