In many areas there are aviation research groups and it might be that you would find one in that area.
You could also place an advertisement in a local paper seeking help in locating the correct site.
On the other hand, you might feel that a memorial in a remote location would quickly become neglected or overgrown. An option might be to place your tribute in a church or in the wall of a local cemetery, especially if there are war graves there.
There is a memorial to an Ecuadorian pilot who was also flying from Lossiemouth on a Jaguar conversion when he was killed and you could contact those who placed it.
Old Duffer