Volvo 850 Limo rear bumper holder

Hello, with my 850 Limo, the bumper holders at the back both look quite crispy, one of them has already been fried. Yeah! New is only available for the right. Is there the only difference between left and right in the two holes with which they are screwed to the longitudinal beam? If yes, I would just buy two for the right and drill suitable holes myself.