Add to Cart Quaife Porsche G50 / 996 / 911 '87 On / 930 5-Speed '89 On ) / 993 / 968 Quaife Atb Helical Lsd Differential, Qdf2Q £984.50 Quaife ATB Helical LSD differential is for a variety of models including Porsche G50 / 996 / 911 '87 on / 930 5-speed '89 on / 993 / 968 . A direct replacement for the standard open differential, the Quaife ATB Helical LSD differential transforms your... £984.50 Add to Cart