What COLOR is the spark at ALL the plugs?
Run a jump start cable clamped to the battery to the intake manifold, and try to start again..If it does install a NEW Ground buss system.
RUN a jump wire from THE battery to the HEI + and try and fire..If it runs you have an open in the ignition system..troubleshoot and repair..IF not..
Pull the module, and have it tested, replace as needed.
Do an ohms check on the Coil primary for "in Spec" readings.