But since it is a 1967, you can check the body tag...
It has the 3f code which for 1967 indicated the 400 engine. I love the 1967 body tags because they tell most of the story.
So, at some point at least some of this stuff up front was replaced. And I'm suspicious of the body tag because the one on my '68 was black. So, to tell if it is a real 400, there are a few more things to check on this one. Others here who are much more experienced could probably get to the answer quicker than I.
This is excatly why you are going to want or see a set of PHS documents BEFORE you seal the deal. It's like trying to find a real Z-28
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI