Edelbrock part #7118 Performer RPM Cathedral Port LS intake manifold with timing control module is an easy solution for those looking to swap a LS engine into their early carbureted vehicle. It allows the use of a carburetor on these originally computer-controlled engines, offering maximum power and a broad torque curve from 1500 to 6500 rpm. The 7118 intake manifold kit comes with a wiring harness and electronic Timing Control Module made by MSD. The ignition module has an internal MAP sensor, and works with either 24x (Gen II) or 58x (Gen IV) OE sensors to fire the Coil-on-Plug ignition system. A rotary dial offers a choice of six timing curves. More extensive programming of rev limits, nitrous retard etc. available via laptop connection. A special throttle and transmission cable bracket that works with 700R-4, 200R-4 and Turbo 350 transmissions is included, making the LS1 engine an easy retro-fit into any muscle car or street rod application. Uses GM individual o-ring gaskets PN 12533587. Manifold hold down bolts included. For LS rectangle port (LS3) applications see PN 71196.