Mustangs, Cougars, Mavericks, Fairlanes, Rancheros, Falcons early fullsize with V8s 60 till 66 pretty much all had 4 1/2" pattern. Some 66 to 72ish. Mid size. Galaxy, Lincoln fullsize had 5" Allmost nothing had 4 1/2' after 78. All truck 9" were 5 1/2" from the 30s til around 86? when the 9 was...