I agree with the added room for a tad of juggling....but many here will not like the look once the job is done but in truth, stock wheels will be an issue here for the overall end look and the key element in the statement above...staying stock wheels. I also firmly believe if anyone is in the frame of mind to swap out an axle they serve themselves best by breaking out the tape measure and making a trek to the wrecking yard. Another point is this is the question is solely related to the width of the axle and not yet addressing the engagement of the rear e-brake....oh yeah, that comes later....in truth, both should be considered prior to any selection.
also.....there is the very clearance needed to get the tire from the axle when changing a flat.....granted shop condition are ideal for the most part but along side the road getting the body high off the rear suspension can be a task...