Got the steel bevel diff gears in my '14! Loving it ... driving the car HARD without worrying about stripping gears. I did strip a couple before but I think that's because of the diffs getting a bit loose in the bulkheads ... should buy new bulkheads really.
I'm running with the 2mm plate under the rear gearbox. What's the benefit of having this/removing it? Not really sure ...
Thanks!