So I finally found a number for Ducane (their website is awful) and now I know - Weber bought the Ducane name, and Ducane is no longer produced. That said - there are TONS of Ducane replacement parts (Home Depot, WalMart, Lowes and Amazon).
So I guess it will likely be a Genesis 3 series (I don't need the side burner crap) But Eric I will look for the Summit as well... Hammerhead - thanks for letting my hijack this thread