I have the Corsair Obsidian 450D and wanted a PSU shroud and i thought i could get one from say the Corsair Carbide 400C as a spare part from corsair and trim it down a bit if it is too long what should i do. I want a PSU Shroud and thought the best way was to get one from another case want to know if the 400C shroud can fit and how i should go about modding it in to my case