there are 2 hole in the head if u take off the ac/PS pump u'll see what i mean....anyway there are 2 holes in the head and u move it from the lower one to the somewhat higher one.....also if u look at the bracket wherethe PS pump used u will need it again to maintain the correct spacing or u can use some washers from like lowes or home depot....
i cut and reused the old bracket, if i had it to do again i would use washers......
that singe bolt with washers for correct pully alignment is all that mounts it, that lil pos scrap i used was just to keep it from giving in under belt tension, think of it as a stablizer bar...
the alt i bought that special tensioner for i plan on getting another one for the PS pump but i just havent gotten around to it