The diffs have been updated and don't fail like the early ones did. They started putting a better tape over the splices, it's black and almost looks like it could seal out water. Kinda. But in the CAN networks you don't see as many pass thru modules. T case is still a pass thru all the way up to the last LR4's. Not having pass thru modules on the networks make it a lot more durable and easier to diagnose.Great! That's the year I bought.