been too long to remember, I prolly modified a generator bracket that was laying around .... I'd hafta look at it again .... it just has to fit the shallower length, so you should be able to weld a tab on the gen bracket to position the pulley to line up - the adjuster arm is an original generator one, if yours is different [there were a variety] it could easily be modified once the alt is in place and you see what's needed
Bill