Looks legit.
4-Row:
http://www.championradiators.com/product/MC1165
3-Row:
http://www.championradiators.com/product/CC1165
Note the only dimensional different between the two is the core thickness (extra .75"). I'm definitely keeping my eye on this. I have the 3-row, and while it's adequate, I still feel like the truck gets hotter than it should hauling up grades with the fairly minimal loads I run. With just a couple sportbikes and gear, I can get into the 220s no problem running up grades. I have a new Motorcraft pump, new Motorcraft thermostat (lowered idling temp from 205° to 195°), coolant, hoses, etc. I even have a new Motorcraft fan clutch, but it never engages.
I will say this, though. Champion must clearly be listening, because this product didn't exist when I put mine in a few years back. Nice to see someone give our old trucks some attention by having new offerings, as opposed to chasing the last known copies of parts all over the web.
Mike