Steve, my conclusion is that the correct mirror for the Mangusta was 'none,' the most convincing picture is this picture of the transporter of Wyss's "DeTomaso Automobiles.' In the whole chapter on the Goose, the only mirrors on a Goose were along with the head scoop added to one-off roadster--the other pics in the factory showed no mirrors...
I've had this book for almost 30 years, and still remember reading about that Chevy-powered goose sent to GM and some guy kind named Dick Ruzzin who ended up with the car...amazing story to be told, I think (not just about the purchase but the keeping all this time..)--Lee
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