By your description I take it that the orignal threads are "stripped"?
If that is the case a Helo-coil kit will work just fine.
Personaly I would recomend you use lock tight ( a thread
locker type /blue) when you install the helo-coil. We use it on all our thread repairs with helo-coil's and king-sert's.
If you need to bottom tap make sure your bottoming tap is your size and it is an "STI" style. (Standard Thread Insert) Most industrial supply shops will have them available, since I doubt home depot carries them.
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The tricky part is not being able to drive it in....but being able to drive it out.
2001 TJ 4" of lift, long arm kit,ARB's F/R with a viair 450c. Custom front bumper,rocker panels, and sliders.
Only 220 miles to Moab
Only 1622 miles to Red's fridge full of (non-utahian) beer