I heard F22 Blocks are Strong as hell
You pretty much heard right. They have iron sleeves. Rods seem to be pretty strong. Main drawback is open deck, but eh, that's nothing.
f22 blocks are unbalanced pile's of crap
Your name fits you well. But I understand every body has their own opinion AND your statement is relative.. So yes, compared to a Ferrari block an F22 block is what you said.
b1 head will work on the a1 block. you'd be much better off going with an a6 head though. they flow much better than the b1 vtec heads.
This guy obviously either has first hand experience or has read a lot from those that do on such sites as
www.AccordinglyDone.com (AD = best forum ever), and cb7tuner.com
As far as the original question please check out
www.AccordinglyDone.com Check out the Tech Articles and do some searches and you will come up with more information on the heads, blocks, and head swaps then you can use.
I'm sure you aren't local to me (IA) but if you are I have an F22B1 and B2 sitting in the garage if you are interested in, you know, comparing blocks or something.