my 92 ford e-150 van 5.0 302
i purchased a alternator bracket off of a 85-93 mustang 5.0 gt lx
the ears of smog pump old bracket broke off
the mustang bracket fits but the alternator for my van is to big
should i get smaller alternator to fit the mustang bracket
or a mustang alternator

 

Mustang alternator is probably 75 amp where your van is 95-130 amp. Don't use the mustang alternator. I'm guessing you are doing this as cheaply as you can, but I can't believe the bracket can cost much at a junk yard. I guess I'm lucky that I have one where I take it off myself and it's real cheap.