where to purchace ignition module ?

I have a 1992 geo tracker and cannot find an ignition module.I'm sure it is the ignition module as there is no spark or fuel.There is power to the new coil and the distributor ignition module.I have also replced the ECU.I can buy a new distibutor with the module but that seems foolishand about $150.00.Any help would be greatly apreciated.