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				 Re: At the strip in the seventies 
 
			
			Thorleifs II and ZL1 engineSo from 1977 the Corvettes was named thorleifs. 1978 the estate was further a Corvette, a-69 coupe. Production year GM introduced the infamous 1969 ZL1 engine., 1979, it was time for Juan to try their luck with the new ZL1 engine, which he managed to squeeze the entire 575 HP from.
 
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