I suggest you email @GTPprix here http://www.whiteautoandmedia.com/index.php?option=com_contact&view=contact&id=1%3Asales&catid=12%3Acontacts&Itemid=56.
He only accepts emails on the weekends between those times. You'll have to search ebay for gauge clusters that will work. I think on the 16s you have quite a few options, from denali sierras, yukons, tahoes, and possibly suburbans. Theres a thread on it here as well about swapping a denali cluster into our trucks.