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Rapid change is a way of life in Chrysler. Facing increasing competition, we realize that the traditional practices are no longer sufficient. Accordingly, a new process using simultaneous engineering (SE) teams in conjunction with reliability tools has been used to design and develop a new family of Chrysler engines. These SE teams include representatives from engine engineering, vehicle platform engineering, electrical engineering, manufacturing, reliability & service engineering, finance and suppliers. The SE teams maximize the use of up-front engineering tools, such as Finite Element Analysis (FEA), Digital Model Assembly (DMA), Variation Simulation Analysis (VSA) and Rapid Prototyping with StereoLithography (SLA), Laminated Object Manufacturing (LOM), etc. The new process combines these up-front engineering activities and the appropriate reliability testing as an integral part of the reliability growth process. It enhances the design decisions made with reliability.