http://data9.blog.de/media/819/76648...943ba2a_o.jpeg
The link above to ken tech blog shows the Tamiya rendering. I could be wrong, as the rear gear box case is coloured the same as other moulded plastic pieces. Wonder if they'll offer blue bling aluminium gear box cases as a hop up for the new kit? if they don't, it'll make the XM conversion for the XR a little special