whats the standard for the width of your rearend? should i try to get one that is exactly the same size as my front end? meaning on the arms i have it is +3 inches each side so a toal of 6 inches wider up front then stock. right now i have the stock rearend and am planning on getting a 9 inch. will it be a big deal if the rearend isnt the same width as the front? rearends are measured from flange to flange correct? or on a floater hub to hub?