Expression would be a MK3 not a MK2 cavalier - so here in UK that would be 1988 model year, not 87. However, the two cars are very similar - in fact the MK3 was developed using MK2 component cars. If you are in another country, the MK2 Cavalier was sold as the Ascona C, and the MK3 was sold as the Vectra A. Hope this helps, and be good to see a pic once you've gone!