I know the complete rear chassis legs are no longer available, but Hadrian Panels list a "chassis leg plate". Does anyone know where these plates are deigned to fit, as the picture they show on their site isnt very clear.

Basically, I have a little surface rust on the outer skin where the beam mounts to the chassis leg, but wanted to do the job properly and didnt know if the plate from Hadrian was suitable for the beam mount section???