Quite neat as aftermarket fitments go.
Common alternative is the RIGHT reverse light position-easy re-wiring.
Filling that hole without a ghostly dip will be tricky.
Saying that, few older cars are without imperfections unless closely scrutinised! :Hammer
Basically, this is not a major issue when treating the car as a whole...we all nit-pick our own cars, but remember they are seldom perfect