The ornamental design for an exhaustpipeset for a minivan, substantially as shown and described.
FIG. 1 is a perspective view of the present design showing an exhaust pipe set for a minivan;
FIG. 2 is a rear view thereof; and,
FIG. 3 is a side view thereof, the opposite side being a mirror image thereof.
The bottom view is disclaimed herein. The portions of the design shown in broken/dashed lines are for illustrative purposes only and form no part of the claimed design.