im sure plenty of people have. pretty easy swap. gotta move spring perches. rear could be offset which wont be a huge problem. if you change the rear you might as well do the front because the j-10 axles are a lot wider than a cj. front i think you have to outboard your springs or its a direct bolt on. one of the two. not sure plus gotta be pre 1980 j-10 so that its a passy drop front 44.
you will haveta outboard your springs in the front and probly move the perches on the axle in the rear... rear axle in the truck might be slightly offset, but shouldnt be an issue...