We recently upgraded our vehicle's drive train with the Alloy USA 10126 Dana 19 Spline and the difference in performance was immediately noticeable. Based on our own experience we can confidently recommend this product to any automotive enthusiast looking to improve their vehicles handling. The installation process was straightforward and the durability of the Alloy USA product is impressive .The only downside we found was the cost, but for the increased performance, it was well worth it..