any ideas on how i go about puting an el intake into my ed falcon?

I have done the swap on my ute, the el manifold bolts up the same, all you need to change is the steel heater/water pipe that goes around the block and the air box.you keep your original injector harness. you may have to run new fuel line from the steel lines on the chassis up to the injector rail as either the el or the ef will have the plastic locks on nthe fuel lines that the ed does not.

you will also need the EL ECU to run the BBM

fordmods-technical-documents-diy-f38/fitting-a-ef-el-bbm-to-your-ea-ed-how-to-t95181.html