Well, there are a couple of things you can try if you have not already. We know you had a problem at the bulkhead so to check that run a wire from positive battery terminal to positive coil terminal and see if it starts if not your connections at the bulk head are probably OK.

Secondly, if you pickup coil is bad you can check it. Grab your digital volt meter... set it to 2K ohms.. disconnect the 2 wire plug at the distributor. you should have around 800 ohms. give or take.. anywhere between 600 and 1,500 ohms is usually OK.

Before you disconnect the volt meter, flip the setting to 2 volts AC or 20 volts AC range crank the engine if the distributor is in, spin the shaft if it is out. For the system to work, you need to see over 1 volt AC.

If the pick up coil passes it's resistance test the gap is correct replace the reluctor. The reluctor keeps a small amount of magnetic field so as it passes the pick up coil AC voltage is created to trigger the ignition module. It takes about 0.6 volts AC to turn the power transistor on. If the pick up coil does not create enough voltage the power transistor will not have enough voltage to turn on. If its not on it cannot switch off discharging the coil primary.

If you need to adjust the air gap use an NON magnetic feeler gauge to do so, if you use a standard metal one it will kill the pickup.