About 12 minutes in, we see Rockford at home wearing a brown shirt and putting on a white sweater as he tells Rocky he's going out. In the very next scene he's wearing a blue shirt and a hounds-tooth jacket.
The squad car that responds to the burglar alarm at the print shop when Rockford breaks in changes three times. The police car shown to first respond to the alarm is a Dodge. The police car that arrives at the print shop and pursues Rockford's Firebird for the first part of the chase is an AMC. Near the end of the chase the police car turns into a Ford.