Explore the data from my paper on offset bars and irregular disks in Magellanic Galaxies! The top chart shows the average fourier amplitude of the inner disk at each time in the main galaxy, and the lower chart shows the bar and disk offset from the dynamical center of the galaxy. An impact with a 1/10th mass companion happens at ~0.1 Gyr. Check the paper for details.
Heavily modified from examples by gniemtez