my friend had the exact same thing happening, couldn't figure it out - this was on a freshly restored "everything" 440-6 70 Challenger R/T, and I mean everthing...so it stalls one day while we're out, I'm looking it over, and I notice the coil is kind of "wet" looking - oily residue around the top - it was leaking and heating up and brreaking down I figured, swapped for a new coil and hasn't happened since - not leaking either. I also had the same problem, like someone just reached in my window and shut the ignition off while doing 60 or idling, spoke to a friend at the dealer where I picked up my MP electronic ignition kit and he told me the orange boxes were possible subject to heat soak - to try a chrome box - that was about 8 years ago - never happened again after I swapped to the chrome from orange...my