Here are a few pics of '67 fronts. See if you have all the pieces shown. 400 cars have a couple of extra fillers between the radiator and the bumper, but they don't affect alignment.
You may have the wrong engine frame mounts. Possibly OHC6 mounts. How do the trans tailshaft and shifter line up? How much clearance between the water pump and radiator?
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching