Your pic shows the Aust. steel made frame type. I loaned my example to the Ballards , the Morris guys over in your neck of the woods - they produced a spot on replica for their FFW Morris truck . There was a guy here in Adelaide making replicas and Ron Pier got one of these - they are OK but not 100% the same as the originals .
The British version is Aluminium and I've seen one of these here , it has plain end panels.
I had a lid as well , this went to the Ballards. I thought I would find another lid, but I've never seen another one