Pulley alignement question

I believe you have the alternator brackets assembled incorrectly. There is no difference between a "slant 6 alternator" and any other, except for the pulley combo and amperage output. In other words, it should fit, if the pulley is correct for the combo. The problem is, there are many pulley combos over the years for various setups, and "it might be" that you somehow have a "mix"