These are the 3 bolts that hold on the alternator/smog pump bracket.
Unless the EFI bracket is different, you shouldn't need to remove the alternator. I have EFI manifolds on mine and can install and remove them without touching the alternator.
Yes, you'll have a little more room. But it shouldn't be necessary.
However, if you do need to, it should just be the 3 bolts.