High flow exhaust Manifolds?

swingingdart said

I just thought about this!
SORRY FOLKS! 1972 Small block, LA 318.

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yes the late 67-70/early 71 manifolds, then they changed in mid 71 to-74 ish which are still good, just not known as being as good as the earlier ones. I may have a passenger side one I might part with.

tti headers are known for better fitment too.