Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. | 
	
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			I have found several original 4.10 4 speed posi equipped L78s to have the heavy duty cooling and a curved neck radiator, as well as some non L78 but a/c equipped cars.    
		
		
		
		
		
		
			
		
		
		
		
		
	
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