It can depend on the design of CV. You will find that a lot of the 6 ball type CV joints like Holden and Porsche axles run have circlips spaced so the CV can slide on the axle shaft. The 3 roller type have plunge inherent in the design but the ball ones don't.
You may find that adapting axles and hubs from another car could do the trick. I cut the roller CV housing off the end of my Ford axles. I then machined them and welded Holden flanges in place.
More than one way to skin that feline.
Cheers