Catalog all the parts you remove: A box of bags and a Sharpie will make your life easier when you bolt everything back together. Drain the cooling system and save the coolant to be reused, remove the air cleaner, throttle and kick-down linkage, secondary wiring, and disconnect the fuel line, using a can or cup to contain the gasoline. You have the discretion of removing the carburetor or leaving it intact with the intake manifold. Pop the distributor cap, mark the position of the rotor on the firewall, free the primary wires from their hold-downs and at the spark plugs, and remove them with the cap. Pull the distributor and set it aside. Unfasten the intake manifold bolts. Since the manifold is likely well adhered to the cylinder heads, you may have to coerce it by inserting the tip of a large screwdriver (or the like) between it and the cylinder head, tap gently with a hammer, and pry it loose.