Mopar electronic conversion fires 4 cylinder only

There is one way to solve the MP ignition problems... pull out the distributor, coil, control box, and ballast resistor. Place them in a garbage can. Purchase all new matched MSD components and install on engine. Follow MSD's wring diagram and get rid of the resistor. This is what I did after going through 3 MP boxes, 2 coils, 2 resistors, and a crappy running car for 2 entire summer driving seasons. Hate to say it, but the MP ignition stuff they are selling today is pure garbage.