Crank Sensor

if your running a TBI engine, 1988-1991 LA series then it does not use a crank sensor, it uses a special distributor that has a hall effect sensor much like the one that the magnum uses except it mounts different

TBI won't run off a stock electronic ignition in mopar, unless you use all chebby parts

to clarify TBI Uses 2 injectors mounted on the throttle body, is that what you have?