Mopar electronic conversion fires 4 cylinder only

eh? I wouldnt plug the vent. Its there for a reason, it keeps the distributor dry (believe it or not) it vents moisture that gets in there from the crankcase. Plugging will gum it up with corrosion. 18436572 and the rule...rotor ALWAYS moves away from #8 when pointing to that banks end: big or small....see?