Will NOT work on 3500 Models. We value your business and we are not satisfied until you are. Rudy's Performance Parts ships products from multiple warehouses across the country in order to get your products to you the quickest way possible.We are not able to send ANY race use products to the state of California. According to the EPA Clean Air Act, they are illegal for use on any Federal, State, or Local public highways and illegal use is punishable by the penalties enacted by the mentioned laws. Rudy's Performance Parts does not condone or promote illegal use of these products. All of our parts and accessories are returnable and refundable. The item in which you are returning MUST be unused, uninstalled, in the original condition, and in the original packaging. If you are returning an item due to an error caused by Rudys Performance Parts or its business partners i. If you are sending an item back, we recommend using a service with tracking and signature confirmation. This product is NOT for sale or use in California. The item "Cognito Motorsports 3.5 Block & U-Bolt Kit For 1999-2018 Chevy/GMC 1500/2500HD" is in sale since Monday, February 3, 2020. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Suspension & Steering\Lift Kits & Parts". The seller is "rudys_performance_parts" and is located in Bakersfield, California. This item can be shipped to United States.