Original sentence: 1991 is largely carryover.Additionally, E-4WD (Electronic 4-Wheel Drive) all-wheel drive becomes an option.Aerostar is named Motor Trend's Truck Of The Year in 1990.New wheelcovers are introduced to differentiate the Aerostar's wheels from those on the Ranger/Bronco II.One style is shared with the Tempo, while the other (5 triangular holes, with slotted spokes) is unique to the Aerostar.The 4.0L engine is a mandatory option.The Cologne engine option returns in a 4.0L version.The changes of this year are limited primarily to under the hood.The extended length Aerostar is introduced for both van and wagon body styles.The grille changed from a chrome egg-crate style to a dark gray style with 3 holes.This is the year the Aerostar overtook the Astro and Safari twins in sales to move from 3rd to 2nd behind Chrysler.This un-named version is 14" longer, mostly behind the 3rd seat area
Edited sentence: Aerostar was named Motor Trend's Truck Of The Year in 1990.An extended-length variant that added 14" to the cargo area was introduced for both van and wagon bodies.In 1990 the Aerostar overtook the Astro and Safari twins in sales to move from 3rd to 2nd behind Chrysler.New wheel covers were introduced to differentiate the Aerostar's wheels from those on the Ranger/Bronco II.One style was shared with the Tempo, while the other (5 triangular holes, with slotted spokes) was unique to the Aerostar.The 4.0 L Cologne V6 was added, and E-4WD (Electronic 4-Wheel Drive) all-wheel drive became an option.The grille changed from a chrome egg-crate style to dark gray with 3 horizontal slats