2004 V40 Need 50mm Brink Hitch

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I own Brink trailer hitch part number 8698915. It is installed on my 2004 Volvo V40 in the United States. The ball size is 47.6mm. Our new trailer/camper requires the 50.8mm ball (I believe that it is actually 50mm).

Does anyone know if Brink still makes these hitches? I would like to purchase another locking unit with the 50mm ball. If not, I will have to find someone to cut the hitch neck and weld on a square receiver box to be able to use a large size ball.

Thank you.