If you get a late 70s carb, with HEI dizzy, and a gauge cluster out of a 30 series truck without the "check engine" light.... it will pass smog no problem. You just have to take your time to keep all the wire and vacuum lines, not necessarily working, just there in place so they appear to be working. (ex:JBwelding a cut off bolt to the side of the carb to accept a "vent hose") The CAT, air pump, injection manifolds, heat riser, and EGR are the important items.
