Complex sentence: Dodge chose not use the full model lines and engines available to them, the 2.7L V6 being available in the Journey and Avenger instead of the 3.2 in the North American versions.
Split into simpler sentences: Dodge chose not use the full model lines and engines available to them. The 2.7L V6 being available in the Journey and Avenger instead of the 3.2 in the North American versions.