This bolt isn't easy to reach. Better with the surge tank removed. At least, you can remove black plastic sheild containing the cabin filter (upper and lower parts). Upper one have some plastic and steal retainers and lower one have around 3-4 small screws.
You already have 2 choices there but I have another one. Jack the front passenger wheel and retreive it. You can turn the wheels to the right to help.
Don't mess with brake lines, front swaybar and subframe.
Just unbolt the tie rod end from the knuckle (bolted with a lock under).
If you're a good tetris gamer, you will be able to retreive/enter the alt by the openning in the wheel well where the tie rod pass. (I did 2 times, you have to rotate it a lot.) Pass it with caution as the brake line is very near.
Before fixing new alt, I suggest you to find a bolt identical to the 2 lower ones (without stud at the end) because this bolt will be a lot easier to bolt /unbolt next time with a wrench. The stud is there to hold a ground wiring (motor to frame) and it can placed at the lower part of a surge tank support (2 verticals). The bolt can be found on any Taurus with a 3.0 Vulcain engine with the alt on the top, it's the same bolt.
It's doable with 2 hands but if you're able to have 2 addtionnals to "guide" the alt in place while you put it in place (once it passed), it will cost less time (1 person at the wheel and another at the top).
Don't give up, I like your motivation !
