For sale BNIB Cusco RS 1.5 way D-series LSD (PN# LSD 316 C), fits cable or hydro transmission. I purchased this to upgrade my track car from the MFactory Helical, but due to time constraints I may not be using it. A clutch type LSD had more predictable and positive locking than a Helical and doesn't turn into an open diff if the car lifts a wheel. Cusco units are extremely popular on race cars in Japan. Lists for $1267 on CUSCO USA, asking $990 shipped, includes two brand new OEM diff bearings.