Kickdown

You don't have to flip the throttle body if you use:
Stock magnum engine bracket.
Stock magnum kickdown cable.
Stock trans kickdown lever and bracket from an a500 series trans.

The kickdown cable runs down the passenger side, routes over the top of the trans, then curves around to the drivers side from behind and pulls on the trans lever rearward. Just as the carb linkage pushes the lever rearward when the throttle opens.

View attachment TV_CABLE.jpg

It will bolt right up to where the old kickdown lever was on the trans.

The kickdown adjustment is then done on the engine side of the cable with a little plastic clip that holds the cable to the plastic retainer that clips into the bracket.

Of course the new cable is called a TV ( Throttle Valve ) cable