Conveniently I've done that too. I had a '21 REWB that I converted over to the '21 SS front brakes. For that not a lot more is needed than the 6 piston swap I explained earlier.
You still have to replace the knuckles, obviously you'd replace the rotors with the SS/Scat Pac rotors and then you replace the 6 piston calipers and pads with the various 4 piston options(ie. Demon or Scat Pac or SS).
It's not a bad swap, can easily be done in an afternoon. You can then run any wheel you want and not be limited by the caliper location.