Creating a Fuji Raf file from scratch - possible?

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Greetings all!

To sum it up quickly: In the age-old quest to make Sony jpegs look like Fuji jpegs, I've come up with a PLAN SO CRAZY IT JUST MIGHT WORK.

It entails creating a Raf file with a reference HALDClut image, then loading that image into a Fuji camera, doing in-camera conversions and creating LUTs with the output files.

Is this possible? At first I thought to just print out the file and shoot it, but if it were possible to just convince the camera that *it* created the file, it would exclude multiple variables and so forth.

Any suggestions or resources to check out would be helpful. Thanks!