Obd1 wiring help to 71 Duster

Hello gentlemen, I have my 71 Duster and a 95 magnum 5.9. I also own the hard copy shop manuals for both the Duster and the Ram the engine came from. I open up the wiring schematics and just get an instant headache. Everything I have read says this engine is sime as hell to get functioning in this car. One fulltime hot wire, switched hot, and grounds. I am not nearly savy enough to figure out where to source those wires or even read in the schematic which is which. A little help please?

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Is there enough room under my hood for an Edelbrock air gap and a spacer for my Thermoquad?