This control unit was designed with a mandatory 6-Pin weather tight connector. This special connector provides a tight, positive locking connection with individual seals to keep dirt and moisture away from each connection. This control unit is NASCAR LEAGAL and with its clear base plate inspection is kept simple. With the addition of a built-in rev limiter, this unit can be adjusted with plug-in modules, saving your engine from overrev damage caused by missed shifts or driveline failure. The 6ALN is complete with rubber vibration mounts and 3000, 6000, 7000, and 8000 rpm modules.