When Booby hurt's his leg, they are playing a song and it is showing different parts of the town. In front of one of the stores is a Dodge Durango like mine. The movie is based in 1988, and there is a 2000 (or so) Durango in the background. Also, there is a Transport van from the mid-90's in the movie too.
The Durango is in chapter 10 immediately after the camera flies over the Odessa water tower. Time marker 34:17. I haven't found the Pontiac Transport, although I had a 1990 Olds Silhouette and they are the same body style. So if they made that car in 1989, it is possible to have one in 1988. Car makers usually put out the new cars 5 to 6 months before the new year. But I think the first year of that body style was 1990. So it would be a slipup.