The scene where Carrol Jo is charging toward the Glass House they used 2 different Ford W 9000 tractors. Throughout the movie Carrol Jo's truck had polished 10 hole aluminum wheels and in this scene, the truck had 5 hole steel wheels
In the scene where Jeri and Carroll argue in the pickup, and Jeri gets out of the truck and walks down the sidewalk while Carroll pleads with her to get back inside, the shadow of the boom mic from the camera car in front of the pickup can be seen at the bottom left of the screen.
The goof item below may give away important plot points.
In the scene where Carroll Jo is heading to the Glass house for revenge, officer Bob is sent after him to make him stop. Carroll Jo tries weaving around to run him off the road, if you look inside the tractor, you see "Pops" lean out the window and shoot at the police car. This scene happened after Pops was murdered!