I don't think safety wire is enough for something like this ...with all the forces involved?
I was thinking it should be enough to prevent the nuts from spinning away from the sleeve. The wire might not be enough to prevent the nuts from loosening a bit from full lock position, but it (wire) should be enough to prevent the nuts from spinning if installed properly. As long as it keeps the nuts in place, shouldn't this be enough? No one else thinks this would work huh?