If you are talking about the C.A.P. Valve? Yes, all engines used them with California cars, I've seen them on non CA cars as well but I have not seen enough evidence to make a complete story on that. Here is a pic of a few different NOS units, from left to right: /6-318/383, center with the red bracket is for a 440 application, furthest to the right is a Hemi style.