No spark after ingition module replacement

The only thing offhand comes to mind is that maybe the distributor is not feeding quite enough trigger power to the new module. In other words, "maybe it is on the edge"

Work the dist. connector in/ out several times to scrub the terminals clean and "feel" for tightness. Inspect the terminals closely with a light, for corrosion

Inspect the interior of the dist for reluctor -to-pickup strike damage, for severe rust and other debri caught/ stuck around the two.

Check the reluctor gap For this you should use a brass feeler gauge. Oh'Really's used to sell these individually. Some feeler gauge kits come with a few brass ones. You need a .008" that is inches not metric

You might also check for grounding. To do that install the new module, turn the key to "run" and check voltage at the "key" side of the ballast, and then the "coil" side of the ballast. "Key" side should have "same as battery" AKA about 12V. "Coil" side should be a lot lower, somewhere between 6-9V. This shows the module is drawing coil power through the coil.......which it is supposed to do under these conditions.

Make DAMN sure the thing is grounded.