Yes Slab, it mounts to the top of the trunk, the one in particular I have my eye on mount at the furthest 4 corners all mount stubs are the same length so if the width and length of the 1200 trunk is the same I cant see any reason why it wouldn't work, all mount stubs are equal length just the width and length of the top part 1200 trunk is a concern.
Actually if anyone has a 1200 trunk and can measure it would be great.