Modification that need to be done is: remove the front plastic, bend away aprox 4mm of the top metal (bend it 180degree over itself, in case you need to reverse the mod this will allow for that contrar to cutting the metal). If you can live with it the eject button usually doesn't have to be changed.
What I found out was that the HD diskdrive draw a bit more power that the DD... in my case it resulted in disk being read just fine but delete/edit/copy or format a floppy and it would go NDOS.
