The Edelbrock Inline Mount Throttle Linkage Kit provides test confirmed smooth, consistent part-throttle operation with a 25 horsepower gain over Torker II and a torque gain of 30 foot / pounds over Performer. It uses high quality aluminum, stainless steel, brass parts and spherical rod ends for great performance and show quality. It will not fit tall-deck truck blocks and includes metering rods to calibrate Edelbrock carburetors. It is sold as a kit.