93 Ramcharger suddenly died

This is a TBI motor, right? Or is it a Magnum? I had a TBI 318 in a 1991 that would do this once in a while. It was the electronic pickup in the distributor - some people call it a hall effect switch. It is down underneath the rotor. Mine would run fine and then just die. Did this to me about 6 times before I figured it out. Ran fine after that!