Roscoe and Cletus have Plymouth Fury squad cars, yet an AMC Matador cruiser is shown during one of the chases.
The Dukes dodge around a big tree limb lying in the road, yet when the pursuing Cletus swerves also (and then skids and goes into the muddy pond), there is no part of a fallen tree visible in the road.
J.D. states that he is looking up the section for "banks" in the phone book, but the pages are white, not yellow.