What in HECK was that old overdrive called
Hone O Drive
Hone Manufacturing Co.
Shelby and Motion offered them. Very few cars had them.
I first saw it in a vintage hot rod mag:
http://hone-o-drive.com/wp-content/uploads/2013/10/Hot_Rod_Magazine_Preformance_Mileage.pdf
Shelby offered:
http://hone-o-drive.com/wp-content/uploads/2013/10/Shelby_Hone_Original_Brochure_and_Order_Sheet.pdf
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