Here ya go guys, pics of 5 different 440 manifolds, aluminum 6 pack, performer 440 RPM, performer 440, Mopar 2836150, and Mopar (over the counter ??)aluminum with measurements from the driver side valve cover.
compare away.....


jt

5768904-IMG_7314.JPG (342 downloads)

Yeah, it's hopped up to over 160...