King Ranch Super Duty—you may have met your match.

We’re in Detroit with Pickuptrucks.com testing six new 2011 diesel trucks, and have been given the very first production GMC Denali HD 3500 dualie to evaluate. This LML Duramax-powered, Allison 1000-shifted 1-ton is targeted right at the King Ranch buyer—and offers the promise of even more power and torque than the new 6.7L Power Stroke offers.

Bathed in black, the luxury-trim-level GMC Denali HD has an Akula-Class attack submarine presence that’s intended to unseat the Ford King Ranch and Ram Laramie packages.

Is this the ultimate in diesel decadence? Check back on August 16, 2010 for a full report that’ll include dyno numbers, drag strip times, real-world fuel economy, and our towing test.