It is hard to tell, but it looks like a non-stock body line has been added to the lower rear quarter panels behind the rear wheels. Are my eyes deceiving me?
Denis 1967 Impala SS Sport Coupe 396/TH400/12 bolt. Marina Blue (South Gate built) 1967 Impala SS Convertible 327/TH400/12 bolt. Ermine White (St. Louis built)