We have a Fiamma rear bike rack fitted to the van this works well
and is designed for the barn style doors we have
The rack basically hangs off of the left had side door, the doors
can still be opened
we noticed when the bikes were on the rack and we were driving that
the top of the door was springing as we drove along
I went for an over centre type latch and made some aluminum plates
which I riveted into place
The latch works perfectly there is now no movement / flex in the
rear doors.