My early 1972 FJ40 has a very rough set of Warn 6 spine short hubs. I have a much nicer set of Warn 6 spine Long hubs on my shelf. Was going to get started on a swap, but wanted to check in here first to make sure this was an easy job? Is it as simple as unbolting the 6 bolts on each hub, slide them off and then slide the new longer hub on? Welcome any thought/advice!