Car Quits At Speed :( stressed

Yeah. It just dies. No stumble or notice. Like some one turns the key off. (I Still have lights and power). It did it last night after running like 10 min. So wasn't to hot on the box. I've changed :
Resistor , plugs , cap , rotor , orange box. The magnetic pick up is next I guess. Condenser wire is broken too ? When it starts back up it's like 2 - 5 min. she wants to start but can't. Wait and all good again.Sound like the pick up. ?

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