Complex sentence: In addition to different model names and concept, the Mexican versions also adapted AMC I6 engines to local conditions and came with more upscale interiors, compared their counterpart models sold in the United States and Canada.
Split into simpler sentences: In addition to different model names and concept, the Mexican versions also adapted AMC I6 engines to local conditions. They also came with more upscale interiors compared their counterpart models sold in the United States and Canada.