you got it, the pic is the driver side - your sketch will work fine with the right length wires, the 4 place loom at the back keeps the rear 2 wires away from the back of the manifold, the clip on the pan [1 slot holding 2] will keep the front ones away from the center dump head pipe and the double does mount with the plug shield - working for me with the 283 in my 58 for over 15 years ... for neatness you might use another double with the rear shield, but it isn't really needed
Bill