Chevrolet installed 3 side draft carburetors on the 235 1n 1953 and 1954 on the corvette. Probably the best state of tune possible without the '12 port head' previously mentioned. The camshaft profile re-engineered is the next best thing to it. Otherwise you could just get busy with a welder and separate the siamesed ports and fabricate runners for 6 sidedrafts and then the same for the 4 shared exhaust ports but that would be.... ridiculous. For all that effort you would constrict airflow...Square Zero
