440 motor in 68 Barracuda

I think you should be carefull. The drivers side manifolds changed part numbers when a 440 was put in due to the taller height of the 440 vs 383. You might have a problem with the drivers side manifold because it barely fits under the steering column on a 67 with a 383 in it. I don't know off hand but those part #s sound like the same ones used on my 67 383 cars. I could be wrong maybe someone will chime in.

Carl