Radiators: Is 22" enough for 400 HP?

Just so you guys know, I just got my ford fans from Amazon, it came sealed in a Dorman box and had the low speed resistor installed. I don't know if some shady sellers are taking them off and reselling them or what, but if you get a sealed Dorman box fan assembly, it does have the resistor installed. This saves about $30 so worth checking into.
This is the link,
http://www.amazon.com/gp/product/B000C17G9K/?tag=fabo03-20
I got it for $112.29 shipped free because I have Amazon Prime, I just noticed that they raised the price to $107.11. But that's still a good price considering that your getting the $30 resistor with it.
Just to pat my own back I wanted to say that I got the 22inch Champion 3 row radiator on Ebay as a blemish for $112 free shipping, SCORE!!! Other than a slight chafing at the very bottom tank I can't find anything wrong with it. It was pressure tested and still has a warranty. Link =
http://www.ebay.com/itm/272089763194?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT