Hi JustJoshingU
If the HDD tray is not removeable , and you wish to mod/remove the tray
check to see where the bottom cage is held to the case , it will most likely have rivets on the underside of the case going through the cage and in the back of the case holding it to the motherboard tray/panel you should be able to drill out these rivets and remove the cage but check first , that is assuming the bottom cage is seperate to the top cage which it looks like it is