i found it interesting in the movie they claimed the challenger was doing 180 when it hit the barricade and had over 200 bullet holes in it but no body was found
if it was a un modified factory stock 440 magnum which is what the challenger had in it then there was no way that it could even do 180 and there was never any mention of a turbo or super charger on it and that would have been the only way it could even get that speed
but i think if a challenger had a 392 hemi it would easily make it to that speed without any extra mods