Sadly, only five original Grand Sports were built in 1962 to compete against AC Cobras before GM brass pulled the plug when they learned of  Zora Arkus Duntov’s secret program known as The Lightweight. These cars were 800 – 1350 lbs lighter than stock, several powered by a 377 cu. in. aluminum small block engine with four cross-ram Weber carbs, turning out 485-550 hp.  All original Grand Sports survive, valued at about $5 million.  This is an awesome recreation, and very compelling.