Front vs. rear track width

Just loaded up my parts car on a narrow trailer, (74 Dart, 4 dr, 318/904/LBP disc/7 1/4). Noticed the front track is about 2" wider than the rear track. Never noticed this before. I'd have to expect all late model A bodies are the same. BTW, yes, all the rims are the same offset.

Obviously not a problem, but thought it was interesting.