M3W bevel box is stationary therefore prop shaft doesn't move, thanks for the idea though.
Not true if you have an NVH kit fitted. Std on 2014 cars on I believe and a few earlier have retro fitted. The NVH lets the BB pivot in line with the output shaft , letting it hit the hole in the bulkhead behind the rear seats with a mighty thump on receiving a big torque input from either the input or output shafts.
