Got my hands on a reference model, thank god. But not gonna tinker with it yet. This thing is already a speed demon.

As far as the mod itself, from what im seeing theres a method a bit longer then flashing to a 6970 bios. This would involve RBE (radeon bios editor) editing the bios you already have and unlocking shaders and then messing with speeds and reflashing with the new edited bios.

Problem with an actual 6970 bios itself are the timings which may or may not be different then your 6950 which can and will lead to problems.