if you want a solid repair, look into www.timesert.com
. much better than a helicoil. not cheap, but very solid. just putting it out there.
It looks like the black magic brakes kit uses something simular to these.
Heli coils do work but alot of times the Heli coil will come out with the bolt when you are taking the bolt out.
93 YJ SOA 2" springs front, XJ springs rear w/main leaf added, High pinon 9 inch rear detroit locker front Dana 44 ARB 4.56 Gears, 36 inch Irok tires too much to list. www.mijc.org