Magnum 318 carb conversion

You will also need a distributor with an advance mechanism (the MP electronic ignition conversion will work or anyone of the aftermarket units).

If you want to use a mechanical fuel pump you will need the LA style timing cover, a snout extension for the cam and the fuel pump eccentric. Swapping to the LA timing cover will also require using an LA water pump (magnum turn the opposite direction) and all the LA accessory brackets and pullies. It would be easier to use an electric fuel pump.

The magnum engine will have a rear sump pan, if the engine is going into a car you will need a center sump pan and pick-up. I believe the 5.2 magnum has the same rear main configuration as the 5.9/360 LA so the 318 pan won't work regardless if the sump is the correct position.