If you look at the back side of the lights, it is clear they will not fit in the penny sized hole the lights have a rectangular extrusion on the back that won�t allow it to be flush mounted with out making the hole in the fender larger.
I have installed these on my svt and had to modify the circle hole to fit the rectangular extrusion.
older A4 side marker
These I believe are the older style A4 lights that will fit in the hole is modification to the light itself and not the fender.
