Sounds like a fuel vent problem to me Does the engine just die or does it sputter like it's running out of fuel. The fact that it fires right back up rules out the distributor pick up.I have almost the same ignition except I have a Firecore distributor and my 6AL is mounted inside on the firewall too.I had mud dobbers put a mud plug in my fuel vent before and my car done almost the same thing.I changed the fuel pump before I figured it out
Gus