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It's the shutter size that'll be most important, the 6x9 should be a rim-set Compur 0, and they are standard. A 65mm Super Angulon almost certainly won't fit, but a an Angulon would, or a WA Dagor in a Compur.

The 9x12 again will depend on the shutter, the Dial set Compurs were never standard so it's hard to say much. but you'd need to find the attaching mounts.