The dead best open plenum intake is the Holley Street Dominator single plane. It accepts a TQ directly and it has a very large plenum that enhances bottom end torque over most any other single plane. They actually rival some of the high rise dual planes. It's a little known secret in the vintage intake world, because everyone refuses to believe a single plane intake can have any bottom end, but it was a well advertised fact when those intakes were new.
