2001 Mercury Grand Marquis Q&A

2001 Mercury Grand Marquis Question: How can I replace intake manifold nipple

I broke the nipple putting in a resistor for my ac. -
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Need to know what size tap was used to cut threads and what size screw in nipple was used. I think original hole is 9/16th meaning a 5/8 tap was needed but can't find nipple to use.