Starting on the top end

 Take note of the position of the points timing (pic 1)and the little notch mark on the cam shaft (pic 4) It took some patience to loosen the cam sprocket bolts and remove it and the chain.  Just be gentle and patient.  It also helps to rotate the crank at the alternator bolt to get the sprocket bolts into a position where you can really grab it and break it free. Have a hanger or piece of wood handy to hold the chain up to keep from falling into the engine.  Also be very careful with the sprocket bolts because they want to fall into the engine as well.