i just purchased this 78 Volare with a slant 6 1 barrell. my plans are to rebuild the engine, find a 2 barrell manifold and race this in V/SA stock eliminator.
Come on over to classracer.com and find gtx john. He is the guy to speak to. He knows how to make the 318-4 way under the index. its not a cheap class to race in by any means. You will have to go back to the stock manifold and a cam that is legal under the stocker rules.