I don't know, I guess.
First: I guess W 50mm will work. I guess so because it's marked as limited compatibility with Actus.
See here:
https://www.captureintegration.com/cambo-actus-lens-compatibility-table/
Second: the 43xl is hard to guess. It's FFD is ~49mm (so a retrofocal lens).
If You subtract 18,3 mm xcd body flange and then 21,9 mm (what Schneider call h2 in this table and diagram),
You have only 9mm or a little less left for the rear standard and the camera mount.
Not enough I guess.
The only possible solution I can imagine is if the rear of the lens could go in the Universalis' camera mount. How wide is it?
The diameter of the rear lens of 43xl is 52 mm.