Randy, “state of the art” has more to do with controls and ignition than it does with hard parts. As always, the big question will be which manifold to use. I believe there are two readily available Weber manifolds: the Hall Pantera IDA manifold and Australian IDF manifold. Most throttle bodies have an IDA flange but I’m pretty sure they’re available for the IDF manifold from Jenvey in the UK. Once you’ve decided on a manifold, the rest becomes a matter of selecting parts and an ECU. Holley is an excellent choice.