MaxxRaxx bike rack, without tow bar bracket (Great Chesterford CB10)

This is a four bike MaxxRaxx bike rack, with all parts present, except for the tow bar bracket which I forgot to remove before my car went to the scrap yard. As far as I can tell, the tow bar brackets are no longer available. I'm thinking that the rack might be useful as a supply of spares for someone who already has one.