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Plugging Air Rail holes in exhaust manifold

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Interested in knowing what you guys used to plug the air rail holes In your stock exhaust manifold?  I used some galvanized plugs in my manifold that is now leaking.  Will be replacing that manifold and looking for other suggestions. 

30616A5F-11EE-48ED-8AE1-B6046EDE1CE3.jpeg

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I had a Z where the PO just sawed off the main rail of the air gallery and crimped the ends.  Another car I owned had it removed, plugs left in place and the holes plug welded.  The latter looked much better.

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3 hours ago, DatsunZGuy said:

I had a Z where the PO just sawed off the main rail of the air gallery and crimped the ends.  Another car I owned had it removed, plugs left in place and the holes plug welded.  The latter looked much better.

I did a hybrid of above.  I cut the tubes, pinched them closed and welded the pinch together.

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Galvanized plugs are pretty hard and won't seal as well as something softer like brass

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Thanks all, I didn’t want to damage my air galley rail, as you can see from the pic it’s a perfect piece and has been replated.  I chose to get the plugs from Z Car Depot.  

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