RIP 340 Onto Magnum swap

Sorry everyone, I am running Fitech efi so no sensor is required. I would just need the external balance flywheel

Wrong. Multiport is what you need. I'd put multiport EFI on my Tesla if I could.

Please note, the gentleman above (not me) did provide the correct part for that application, completely by accident.

Just make sure to verify that you have the correct balance for a 5.9 vs. 360. They're different.