This Photo shows the left hand side 'A' Post. As you can see it has rusted at the bottom. This is coursed by water coming up through the slot in the floor. Because the 'A' post sits on a plate which is L shaped and one side of the L shape fits through a slot in the floor,  ( which water comes up through.) and this plate is bolted to the Chassis sill beam.   This job is not for the faint -hart.

 

                                                                                              

The repaired A Posts shown below and on the right. I