More out of the dim past.  Had a friend ,now deceased. who had acquired  almost complete  plans for the Lightning. Had gotten to the mockup stage for an 80% scale repro. He planned on using a pair of 600hp  engines driving 3 blade props from a Beech-18.  His plans source was one of the designers  at Skunk Works.  At any rate, this plane is very hard to copy at another scale and have it aerodynamically  correct & stable.  When  I get the opportunity I will talk to his family to determine what has happened to the stuff.  My friend had a background at Grumman-American in the development of their  SE line.
Ed Fisler

 
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