anyone know if there is such thing as an emmission label on diesel vehicles. I may buy an out of state(CA) diesel truck and want the DMV registration process to go as smooth as possible. I have seen pictures of some engine bays but have not seen the label in them. If there is such lable is there a difference between 50 state(CA) vs 49 state(USA ) label? Also, for those of you who live in CA and have bought out of state diesel trucks how was the process?? I am aware that for gasoline engines the label has to be 50state for that year vehicle unless the owner is moving to CA. thanks, ARQ.