318 MAX fuel economy builds?

Factory Magnum. All the parts are high-end, like a cap and rotor with brass terminals, Accel coil, etc, but nothing exotic.

Car runs awesome, almost too good actually. With the EFI and computer controlled OD transmission the drivetrain doesn't really have a vintage car personality anymore.
What is involved to get the computer transmission connected and controlled in a vintage car? I got an A-500 with the lever kick down and will control it with fully adj pressure switches and vacuum kick downs for both the od and the lock up so they drop individually rather than losing both simultaneously like some are hooked up.