US Car Tool Mopar A-Body Level 3 Install | Spring Relocation (Step-by-Step) | Part 1

It’s time to get serious about putting power to the ground. In this episode, I’m kicking off a multi-part series installing the US Car Tool Level 3 Chassis Stiffening Kit on my 1970 Plymouth Duster — starting with the spring relocation kit. This upgrade is a game-changer for Mopar A-bodies. By moving the leaf springs inward, we’re setting the stage for mini-tubs and much wider rear tires, while dramatically improving chassis strength and traction - and importantly the stance & look. Part 1 is all about prep and fundamentals. I tear out the old rear suspension, remove decades of undercoating and grime, and get every surface properly cleaned and prepped for cutting and welding. This is the not-so-glamorous work, but it’s critical if you want everything to fit right and last. If you’re thinking about tackling this upgrade yourself, this video is for you. The instructions that come with the kit leave a lot open to interpretation, so I walk through the process step-by-step, sharing the tips, tricks, and “what to watch out for” moments that only come from doing it firsthand. Whether you’re building a street car, strip car, or something in between, this series will give you a realistic look at what’s involved in installing a Level 3 kit on a Mopar A-body — and help you decide if it’s the right move for your build. 👉 Next up: mini-tub prep, wheelhouse work, and more cutting and welding as we continue transforming the rear of this Duster. #moparornocar #1970s #plymouthduster #USCT #diy USCT