When Stuart gets into a gunfight with Silva's thug, they are much closer together when seen from the thug's perspective than they are from Stuart's perspective.
In close up scenes Bailey drives a 1960 Thunderbird convertible, but the car being driven up the mountain in the distance shots is a 1959-60 Pontiac Bonneville.
The stock footage of the jeep going over the cliff in flames is squeezed, meaning it was taken from a feature shot in CinemaScope.
When Stuart speaks to Kookie and Roscoe on the telephone and asks them to do some research for him, he never mentions the telephone number where he can be reached for them to call him back, Kookie who does telephone him back.