Early Reverse Lights

[CANISDOG@aol.com]

Can anyone tell me the exact center hole location for the early reverse 
lights.  I would like to drill my holes prior to painting and I'm not sure on 
location.
I have examined the lights carefully and held them up to the rear valence.  
It is very apparent this "compound curve" on the base must be in a precise 
location to fit right.

Thanks
Paul
Colorado