Comp Cams Engine Camshaft 20-608-9 Computer Controlled 199/206 Hydraulic Roller. Engine > Valve Train Components > Engine Camshaft. Computer Controlled 199/206 Hydraulic Roller Cam for Chrysler Magnum. For more than 35 years, the COMP Cams® mission has never changed: to produce the highest-performing products possible, provide customers with superior service, and to lead the industry in technological development. While the COMP Performance GroupT has grown to multiple companies and hundreds of employees, we still retain the competitive spirit and desire to be the very best that has positioned COMP Cams® as the absolute leader in valve train components.