Well, I'm wrong on the T - 1908 to 1927. You are wrong on Impala. http://www.chevrolet.com/vehicles/2010/impala/overview.do?seo=ysm_|_2008_Chevy_Retention_|_IMG_Chevy_Impala_|_Chevy_Impala_|_chevy_impala Later, JR