Complex sentence: Balance shafts were added in 1995, also known as a transitional year from the Quad 4 to the renamed TWIN CAM variant, in 1996 2.4L (LD9) the complete engine makeover was accomplished.
Split into simpler sentences: Balance shafts were added in 1995; 1995 was also a transitional year from the Quad 4 name to the renamed TWIN CAM variant. In 1996 2.4 L (LD9) the complete engine makeover was accomplished.