Welcome to the home of all your Duramax Needs from 2001-2025.

Hello I am Spencer Knee Owner and Founder of KDS, my goal is to give everyone an affordable way to build their dream Duramax Engine or Transmission. My Experience is that I am a Master Certified GM Diesel and Transmission Technician I've been in the Automotive Industry for 5 Years before that I was a US Army Airborne Infantryman with the 82nd Airborne Division, I'm  Currently Living out my Dream to help myself and others build Duramax's at every level from the Guy that just uses there truck for Light Towing all the way to the guy doing Competition Drag Racing and Sled Pulling.