Outrigger repair section MB31:
Half-repair section HZA464H:
Full cross-member HZA464:
All above images from Moss Europe.
Unfortunately I have lost who sent me the following pictures.
Looking towards the prop-shaft, showing the 'lid' on the crossmember:
'A' is the cross-member and 'B' is the 'lid' that extends a short way under the flanges of the tunnel and the floor panels, the end of the overlap is circled: