73 340 dies after 15 of driving

1973,340,727,elec.ign., My Dart Sport dies when she warms up. I put a new cap and rotor, fuel filter on and it still does it. Let the car cool down for 15 min. and she’ll start up again. What gives? Thanks.

1973,340,727,elec.ign., My Dart Sport dies when she warms up. I put a new cap and rotor, fuel filter on and it still does it. Let the car cool down for 15 min. and she'll start up again. What gives? Thanks.