GFB ATOMIC Manual Boost ControllerBoasting a repeatable and stable boost curve, quick rise rate, and unbeatable value, GFB's Atomic has earned a reputation as being one of the most reliable and effective manual boost controllers on the market. It is important to note that the Atomic does NOT use a "ball and spring" system like others on the market, for very good reason This Part Fits: Year Make Model Submodel 1987 Chrysler Conquest Base 1988 Chrysler Conquest TSi 1991 1996 Dodge