273 Exhaust manifold question

273 said
Don't know for sure but in 67 the abody's got bigger so I would guess 64-66 would be the same and 67 and on would be different.

64-66 are the same, 2 barrel or four barrel. 67-up A body 273/318 passenger side is the same. 67-up 273/318 drivers side is different.