And for anyone thinking of using a 3G alternator, there is a very good chance you'll need to use a double v-belt pulley setup or it will slip.

I had to modify the back of my stock '86 2.3T double v pulley so it wouldn't rub on the 3g's case.

And for anyone thinking of using a 3G alternator, there is a very good chance you'll need to use a double v-belt pulley setup or it will slip.

I had to modify the back of my stock '86 2.3T double v pulley so it wouldn't rub on the 3g's case.

Since I made that post in 2016, a fair bit has changed. At the time I was using an improvised mount on the passenger side that started life as a 1986 A/C compressor bracket.
I moved the alternator to the driver's side by use of a '77 Pinto 2.3 low-mount bracket set. A large-case 3G alternator requires grinding the lower bracket to clear a bolt boss on the case otherwise it won't rotate enough to bolt to the upper bracket. If you manage to get a twin v-belt pulley on it(I had to modify one on a lathe so it wouldn't rub the case), then only the outer groove will line-up with factory '83-86 2.3T pulleys. It will also likely need a longer belt than whatever fit on the 1G. In my case it was a 43" and it can be installed with some difficulty. Really should be 2-3" longer.