Re: 11D COPO Chevelle???
			 
			 
			
		
		
		
			
			The earliest COPO and Yenko Chevelles that I know of are early February.  A late March engine wouldn't be original to the car but a lot of these engines broke and were replaced over the years.  If it is real, fine.  If not it could make one nice clone.  If it is a real SS car, it would be worth doing a restoration. The KQ rearend would be another good clue.  4:10 rearends in SS396 cars were coded KK. 
		 
		
		
		
		
		
		
		
		
	
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