The ornamental design for a frontportion of a motor vehicle and/or toy replica thereof, as shown and described.
FIG. 1 is a front perspective view of a front portion of a motor vehicle and/or toy replica thereof showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a side view thereof; and,
FIG. 5 is a top view thereof.
The claimed design is shown darker than the surrounding environmental subject matter, the latter being shown lighter for contrast and being no part of the claimed design.