In addition, Pro Fab fabricated custom wheels for the truck and welded on the custom locking hubs. The rear wheels are wrapped with 35-inch TrXus STS all-terrains from Interco for optimum traction in the dirt.
While still new to the sport, Wes has come a long way in the world of sled pulling, and driving this wild Duramax has become an addiction. In recent years, enthusiasts have proven that the Duramax can go head-to-head with any of the modified Cummins engines, and the Kusilek's truck is a perfect example. Wes, his father, and friends, have all contributed to the buildup, further reinforcing the family-oriented nature of the sled pulling sport.
 Originally a gas-powered longbed,...  Originally a gas-powered longbed, the truck was immediately converted to an LBZ-powered shortbed. As you can see, one long, productive winter led to one of the dominant Dodge's toughest rivals. Look for this truck to be competitive for years to come. |  Kusilek's truck took the overall...  Kusilek's truck took the overall win in the Pro Modified class at this year's DHRA event in Indianapolis. The fact that his Duramax runs solely on diesel fuel gives it plenty of potential to easily make more horsepower with methanol injection or even another turbo. For now however, Wes is satisfied with the truck's fuel-only performance. |  The custom injectors from...  The custom injectors from Industrial Injection were built to flow 105% more than the factory units and the cylinder heads were machined by MAS Performance of Ellsworth, Wisconsin. |
 The custom-fabricated exhaust...  The custom-fabricated exhaust headers help keep EGT levels at a manageable 1,600 degrees F. |  A single Garrett GT42 turbo...  A single Garrett GT42 turbo draws air in from the rear of the truck and pushes exhaust out through a custom up-pipe that Wes and his dad built. |  A Grand Poobah CP3 pump from...  A Grand Poobah CP3 pump from Industrial Injection is mounted just above the factory CP3 on the front driver side of the engine. |
 The unique stainless steel...  The unique stainless steel reservoir mounted on the passenger side front of the engine is what Chris and Wes call the "ice box." Replacing the intercooler, and literally holding ice, this configuration further reduces exhaust gas temps during 4,000-rpm, full-throttle passes. |  The Pro Fab one-speed Reverser...  The Pro Fab one-speed Reverser transmission and drop box help get all of the Duramax's power to the ground. |  Familiar to most heavily modified...  Familiar to most heavily modified pulling trucks, the 2 1/2-ton Rockwell rear axle has proven bulletproof so far. |
 Since this photo was taken...  Since this photo was taken at the TS Outlaw event in Bowling Green, Kentucky, Wes replaced these headers with manifolds from a 4500-Series Duramax. |  The interior offers a variety...  The interior offers a variety of gauges to monitor all of the truck's vitals during operation. Unlike a lot of modified pulling rigs, throttle input is still applied by the driver's right foot. |  |