Rick, start with the basics. Make sure the points are clean and gapped correctly .(.015") Check to make sure the rotor is in good shape. I understand there was an issue with he rotors on the big car, so you may just want to install a new one.
Make sure you have power at the coil with the ignition on, and power at the wire from the coil to the distributor as well. Check to make sure all of the connections are clean and tight.
If everything looks ok so far, turn the ignition off, and check the resistance of the coil with an ohmmeter. It should read 3 to 3 1/2 ohms. Check each plug wire and make sure you have continuity between the cap, and the spark plug end of the wire.
If that's OK, turn the engine over until the points are closed. Make sure that they are fully closed, using the ohmmeter. Disconnect the coil wire at the distributor cap. Turn the ignition back on, and while holding the coil wire about 1/4"from the head,or any good ground away from fuel lines, flick the points open with an insulated screwdriver. You should get a spark between the coil wire and the head, or wherever you are holding the wire.
Try this stuff, and if you aren't getting spark yet, get back with us, and we'll lead you through some more tests.
Good luck!
Jeff