The alternator lower mount bolt attaches to the AC compressor bracket. A lot of trouble if you had to remove or replace that bracket due to the compressor needing to be removed. The bracket also is expensive; so, if replacement is necessary, a used part would be the more economical way.

 

I was thinking of using a heli-coil, but I don't know if you can get the oversize tap through the first hole in that bracket.

What about access from the other side? Can you use a longer bolt with a nut on the other end?

 

Wow, these images you have are great to have Bruh! They must be from a second or even third echelon manual. Here's what I did: I stopped stressing about it and dove into the issue with my limited prowess to guide. Harrassing the Dealer I bought the car from, I was advised the bracket was about $500 and labor about three hundred. Thinking I should easily double that I told myself to get off my ***! I found a short tap that allowed me to run it in with a 9mm open end wrench. When the travel was exhausted with the wrench, I used a pair of needle nose locking grips on the smooth length of the tap. Thinking the worse to expect chunks of aluminum being produced, I was happy to see fine aluminum grinding being expelled. I found a bolt a little longer than necessary, ran a die down the bolt enough to rid excess shoulder. I mounted the alternator, and ran the bolt its full length. Not sure of the torque I ended up with, didnt want to tempt the integrity of the aluminum. I put a dab of loctite blue on the exposed bolt near the edge of the bracket. Technical note: The new serpentine belt is easiest placed on at the the alternator pulley, not the slack adjuster.

Thanks for all the help. I have a timing belt to do next!