Our early 2012 chassis was changed when it cracked and we got a new chassis that had the fixed (non-NVH) bevel box like our original...
I understand that some aspect of the cockpit/rear end (bodywork?) of some of the earlier cars is a bit different and so as not to have to change that as well, the factory was using some form of hybrid chassis (braced front/original rear) for the replacement
My chassis is a similar one with the fixed bevel box mounting. I think they may well have taken a NVH chassis, cut off the relevant brackets and welded in the small cross member that the bevel box front mounts attach to. Why do I think this? Because in my recent delvings in about the bevel box and swing arm I found that the cross member wasn't attached quite as far forward as it should be, to the point that somebody had slotted the front mounting holes by hand and by not quite enough to allow it to fit correctly. After some work with a Dremel and a straight edge I have now got my bevel box solidly bolted in place and pointing in the right direction, presumably for the first time since this chassis was fitted. It might well be something to do with the configuration of the bodywork that caused them to do it this way, but I had just assumed that they didn't want to spend money on adding the NVH parts!
