The Duramax engine paired with Allison transmissions makes for an impressive combination known for their exceptional performance. However, it's crucial to prioritize proper upgrades for the front end to ensure safe operation. When it comes to suspension lifts, choosing the appropriate shocks is essential for achieving a comfortable ride. With 15 years of experience working on this platform, we have perfected the recipe for creating the most formidable Silverado / Sierra trucks available. While 33" and 35" tire setups remain highly popular, the newer platform allows for an incredible combination of 37" tires with a 6.5" lift, resulting in an awesome setup.