Computer case\tower\cab (Derry)

I know it's a long shot but I'm looking for an old Alienware computer tower\case\cab for upgrading to new hardware unless the hardware inside of it is still useful but I was thinking about upgrading one with more modern stuff inside instead of buying a new computer case. I like the looks of the old pre-Dell Alienware's like the Predator cases and such. Or the Area 51's. Thanks.