I was mentioning these failures to a race car owner to
see if they collected any data points on the temps of
their coils.  He said they didn't as they kept the msd
boxes mounted on top of the dashboard in the driver
compartment.  However, he did think the wires were
sized a bit small for powering the coils.  His
thoughts were they should be powered by at least 12ga
more like 10ga wires.  His thoughts were that it might
not be just the temp or just the vibration or just too
much amp draw, but taken together they could be
causing the failures.  Though, he is the first to
admit he is not technically oriented, but does have a
lot of experience with cars to draw upon.

Nothing concrete, but perhaps something to consider...

-Scott

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