Replace the Hall effect pickup plate/coil in the distributor. $20-30. Napa or Rock Auto should have it.

A few years back, had an 88 Ramcharger 4x4, 318 TBI. 70k miles. Same problem. Would just stall after driving, fully warmed up. Sometimes right on the freeway in the middle of traffic! Annoying as hell. Replaced the fuel pump, fuel filter, problem continued. Wait about 15-20 min. after stall then restarts no problem and resume driving. Won't throw any codes. Stumped, I spoke with a Chrysler Tech about it. He said the pick-up coil gets hot and shuts off. Common problem. As I recall, at the time, the dealer parts dept always kept an inventory of those coil pickups on hand. Go figure!