20. Crane also sent over this ignition box and Fireball coil pre-mounted on an aluminum plate to make for easy installation inside the cockpit. Crane’s HI-6RC ignition box is fully digital for excellent timing control and features the ability to automatically retard the timing 20 degrees on start-up. A lot of engine builders prefer to lock out any mechanical advance, but the always-advanced timing can make the engine difficult to restart if it stalls on the racetrack. Crane solves this problem by removing the advance duties from the distributor and giving it to the digital ignition box.