If you haven’t heard, you probably aren’t in their league…the upcoming Ultimate Callout Challenge (UCC), brought to you by Alligator Performance and Vibrant Performance, is a nationwide callout to owners/builders of some of the biggest, buck nastiest diesel powered hot rods anywhere. Those that were contacted and invited are names that Diesel World Magazine and the Northwest Dyno Circuit (NWDC) deemed as the ‘best of the best’, guys who haven’t just made empty promises of big dyno numbers and crazy fast 1/4 mile times with trucks that haven’t even been built yet. The list of competitors is a strong one, filled with trucks that have already proven themselves. These guys are allowed to talk a big talk because they already proven they can walk a big walk. We’re talking horsepower numbers in the 1200+ range with some even pushing 2000hp. Those with 66mm turbochargers need not apply…this isn’t for your average daily driver. These are full out competition built rigs with owners who aren’t scared to use enough nitrous to send the NASA shuttle into orbit.