Just turning the diff upside down will make it run the other way.
That assumes a bevel drive taken from the counter shaft of the gearbox and that there is a drive shaft to a differential. The reason a shaft driven differential direction of rotation is affected by flipping over is the ring gear changes sides when the differential is flipped thus reversing the rotation of the ring gear carrier. In a chain driven differential which side the sprocket is on doesn't not matter. Torque from the sprocket is transmitted to the axles via the carrier. Myself, I believe the sprocket is not within the loop of chain but the on the outside of the chain run and idler sprockets used.
If the sprocket turns towards us in this view so will the wheels.
If the sprocket turns towards us in this flipped view so will the wheels.
Steven