try this link, it should take you to my summit shopping cart which i added both the brackets
SummitRacing.com - My Shopping Cart
if it doesnt work the part numbers and prices are as follows
FMS-M-8511-B351 - POWER STEERING/AC - $99.88
FMS-M-8511-A351 - POWER STEERING - $61.95
your alternator side bracket will line up with no issues at all but if you want to use the stock 5.0 power steering then thats the bracket that you need to run it on a 351.
you also might need the reducer bushings that allow you to use the stock bolts, im not sure about afr but my world products heads i had to have them, i went to ford and i kid you not they wanted 21 bucks a piece for them and they had to special order them, then i went to my local machine shop and he had a bunch of them layin around so he gave me 2 at 3 bucks a piece. if you need them i got the part number for them as well, just let me know, but the machine shop knew exactly what i was talking about just by me saying reducer bushing for a ford.
another problem i had a issue with was the stock ac bracket that mounts directly to the head, i know this doesnt pertain to anyone thats not running ac but for those that are i had to drill out the lower hole alittle bit, it was about 1/8th of an inch off from lining up perfectly but that could just be my heads. world products states it in this flyer that they throw in with the heads, i didnt believe it till i tried it and sure enough it was off.
i had another issue with the power steering, because the 351 is so much freakin taller then the 302 is my power steering pump filler neck was basicly right up next to the battery box so there was no way i could put the bolt in the head and then slide the pump onto the bolt, i had to put the bolt through the pump and thread it into the head all at the same time i was holding the pump in place. i hope this makes since, if not i can try and explain it further. just a few issues i remember having right off the top of my head