1965 1966 427 Chevrolet motors for Corvette Chevelle and perhaps others had a distinct difference from the 67 - 72 bases and reproductions are SOOO wrong. This original base had some rusty surfaces on the under side, it was repaired inclusive of the AC vent tube and the finished with OEM original e-coat dip paint as were the originals. This original finish does not come off with carb cleaner or gasoline as the rattle can paint jobs do. This has the correct paint look for gloss and thinness, note that powder coat, the popular finish these days leaves a mottled finish, looks too thick, etc, not NCRS correct for gloss and finish. Get the real thing and be done with it.