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Wehrli Custom Fabrication Inc. specializes in high-performance diesel upgrades and custom metal fabrication. At WCFab, we take great pride in our reputation for providing the highest quality fabricated parts for your Duramax, Powerstroke, & Cummins Diesel trucks. We produce MADE IN THE USA turbo kits and custom performance parts on many different levels for your work, play, or competition diesel truck. You can rest assured you will receive the best quality product, fitment, performance, and customer service.