There are no headers(shorty or long tube) available currently for 2008 or newer 4.7L's. I'm really surprised airram had them listed for 2008 as I believe he knows they don't fit. Maybe it was a typo. Did he refund you?
Gibson is looking for a test vehicle(for fitment) to finish R&D of their 2008+ 4.7L headers. You're not exactly "close" to them(california I think) however you're closer than any of us that would be willing to do it. You'd get a free set of headers
and help out the rest of the 4.7L community. I'd buy right now if any were available...