I have a question that I'm hoping someone here might be able to answer. Does anyone here know if there is an emission compatible 4 barrel intake manifold available for the 229/4.3 V6? I've looked at an Edelbrock catalog, and through GM performance parts as well, and while they do carry 90 degree 4 barrel intake manifolds, they're not set up for EGR, and other emission equipment. I know that GM built some 4.3 V6s in the mid '80s with 4 barrel carbs for use in light duty trucks (and they would have had emission equipment on them), are they the only ones? I have an idea for an engine build, that's carbureted, but being as how I'm in Ontario, it will have to be smog legal. Any and all help is appreciated, thanks.