I assume that to buy a new heatsink, if you find one, you will need to replace the whole side as it is one piece per side. If so, you may want to replace both sides in case there has been fading over the years.
Alternatively, if possible, if you move the left heatsink to the right, and vice versa, the bent heatsink will be on the back?
Alternatively, if possible, if you move the left heatsink to the right, and vice versa, the bent heatsink will be on the back?