Haven't seen the other thread about this so forgive me if I'm repeating anything.
Is there no spark at any of the plugs?
Have you ruled out the HT lead/distributor cap/rotor arm/coil?
Also check the LT lead to the coil. If it's not connecting properly the coil will have no current to amplify. Another thing to check is the earth connectors on the engine. Make sure the engine to body earth straps have good connections. Sorry if this is noddy stuff to you but sometimes the blindingly obvious gets overlooked.