The ornamental design for an automobile body front end unit, as shown and described.
FIG. 1 is a right side elevational view of an automobile body front end unit showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a perspective view taken from in the front and to the right thereof; and,
FIG. 4 is a front elevational view thereof.
The side opposite to that shown in FIG. 1 of the drawing is a mirror image thereof.
The broken line showing of the remainder of an automobile in the drawing is for illustrative purposes only, and forms no part of the claimed design.