Here is the compilation of contemporary perfromance tests (Nov. 1984 Car Review) and a link to the 1997 Popular Mechanics Muscle Reunion with Modern Cars Showdown.
http://www.popularmechanics.com/auto...66.html?page=2
http://www.popularmechanics.com/auto...66.html?page=2
[url=[IMG]http://i244.photobucket.com/albums/gg23/bingokid/1970%20Buick%20GSX%20%20455%20Stage%201%20Yellow/1970%20Buick%20GS%20455%20Stage%201%20Convertible% 20Triple%20Black/carreviewnov1984.jpg[/IMG