You won't see another photo, ever, with a 1970 440 six pack 'Cuda and a '71 401 AMX
this is the 1970 Chrysler cast iron 6 pack manifold, which is about twice as heavy as the Edelbrock aluminum manifold that was the special 1969 1/2 option that put the "6 pack" in the American lexicon
It was a consignment car at
http://www.musclecarsandiego.com/ and it's new owner is one fortunate son