Now, hot rodders can have the late-model muscle of the popular Gen III and the classic look of dual-quad carbs. Designed for LS1, LS6, LM7 (5.3L), LR4 (4.8L), and LQ4 (6.0L) engines, the new RPM Air-Gap LS1 Dual-Quad delivers outstanding performance from 1500 to 6500 rpm. Included with the 350-7518 is an electronic timing module that picks up MAP, Crank Position, and Cam Position in order to drive the stock ignition system.