Slant 6 exhaust manifold question

Would any /6 guru know if the exhaust manifold from a 1975 Duster fit a 91-92 era piece of farm equipment? If I'm not mistaken, all the standard exhaust manifold were the same but can't be sure so I'm hoping that someone may be able to help. Please email me with any ideas.
Thanks

Ken
Edison, NJ
rider1454@aol.com

All the manifolds from start to finish were basically the same. The only thing that changed was the choke pocket which was around 1974 or so. That was when they went from the watchspring to the electric choke thermostat.

Thanks, I appreciate the information.

Ken