Upper panels: Comparison between JWST observations of SN 1987A from September 1-2, 2022 (left column), and the density distribution of the remnant-including both shocked plasma and unshocked Fe-rich ejecta-predicted by models B18.3 (Paper I; center column) and B18.3-Dec (right column) as of February 2023. Lower panels: Same as the upper panels but with identical ellipsoids overlaid on all images as a reference for comparing the large-scale morphology of the remnant across observations and models. The dashed line at the remnant’s center marks the approximate orientation of the homunculus’ major axis. While the model-generated images reproduce the general structure of the remnant, they are not intended to exactly match the observed appearance. The original JWST image was created by Alyssa Pagan (STScI), and the image credits belong to NASA, ESA, CSA, Mikako Matsuura (Cardiff University), Richard Arendt (NASA-GSFC, UMBC), Claes Fransson (Stockholm University), and Josefin Larsson (KTH).