With some of the other comments, I'm surprised we haven't heard something like "Well, the one that corners like a brick has the 460 in it" from an FE owner, and then a reply from a BB owner, "And the one that accelerates like a brick has the FE in it"...
Seriously, the heads on the 460 are much wider than the FE, the valve cover is on both the head and the intake on the FE, and the raised head bolt pads on the 460 are some quick identifiers...