A Ford Maverick is seen behind Jimmy & Coop while Murphy is watching them. This vehicle didn't go into production until April of 1969.
During the flashback scene with the drug dealer, when Jimmy is holding the bag of drugs, there is a sign that says OAL-fiber in the close-up. Shortly before that the sign says CAL-fiber, with number 625 at the bottom of it. This show is supposed to be Philadelphia, and Cal fiber is located in California.