WHAT'S DMAX SWAP? Whether it’s your Dad’s old classic C-10 or a custom street rod that you have always wanted since you were a kid! We can help you turn your custom ride into a powerful, reliable and impressive machine by helping you power it with a Duramax Diesel. START HERE! Looking for information on standalone harnesses and tuning? Start with our ordering guide for a walkthrough. Ordering Guide WE'VE GOT TUNES! We've got your tunes covered for ECMs & TCMs, providing several options on how to accomplish that for you. Also check out our custom harnesses! Shop ECM / TCMs Now!

'Big Iron' Duramax Legend Series Build by Roadster Shop

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