Original sentence: A new federally-required 5 MPH front bumper and revised grille along with new tailights and license plate moved upward from the lower bumper were among the most noticeable changes for the 1973 Electra 225.The ventilation system used in 1971 and plague with various problems was replaced by a new system utilizing vents in the doorjams replacing the trunk-mounted vents of the previous year
Edited sentence: A revised grille above a new federally-mandated 5 MPH front bumper and revised tailights separated by a license plate and fuel filler moved up from the lower bumper were among the most noticeable changes for the 1973 Electra 225.The trouble-prone ventilation system used in 1971 was replaced by a new system utilizing vents in the doorjams instead of the trunk-mounted vents of 1971