The 1964 XP-819 was an engineering study used to test a rear engine concept concerning the correct direction for future Corvette development. The XP-819 was the result of a disagreement between Zora Arkus-Duntov and engineer Frank Winchell. Winchell claimed you could make a balanced, aluminum rear-engine, V8 powered sports car. Duntov disagreed. A loose design was drawn that drew some very unflattering remarks from Duntov and Dave McLellan with…