Thanks everyone. I ordered the AC Delco iridiums from rockauto.com, and wanted to verify before I put them in. Will post pics of what the old plugs look like when I get them out in the next couple days.
I am running Autolite Double Platinum because my auto parts store was out of the iridium. I can tell no difference in performance or MPG. I was informed that the expensive iridium plugs are not different than the platinum, but they are rated for 100000 miles, as compared to the platinum with is much less. I have always changed mine every 40 - 50 thousand miles anyway.