Has anyone ever stretched a case?

[Rubycon]

I want to fit an EVGA 762 4X Classified in the Silverstone FT-02/Raven RV02 cases. Stretching means cutting the chassis and adding approximately two inches of depth to accommodate these monster sized boards. The cut would have to be right below the bottom most expansion slot obviously and perhaps three additional slots added. Fairly simple sheet metal work with plasma cutter and tig torch.

 

[Mechawyvern]

Never seen this done, and sounds like a neat idea for a project.