My ultimate setup would be a Type 4 with a ITB EFI and a Ibrahim Kuzu 547 style shroud.
Mount the injectors low on the manifold and cover the fuel rails with something that looks like
And also twin-plug it. Hide the crankfire pickups and arduino box, use them to drive two four cylinder coil packs. Mount those on the ends of three-inch tubes pointing out of the ends of the fuel rail covers. Then slide accordion style rubber boots over them so just the bundles of plug wires (and the disguised-as-a-coil-wire bundle of small wires from your ECU) flop out the ends. So it looks something like
I believe that would offer the best combo of air-cooled correctness, usable torque, long-term reliability and conversation-starter-at-cars-and-coffee.