Add to Cart Quaife Mgb V8 / Mgc Quaife Atb Helical Lsd Differential, Qdf6Kc $988.32 Quaife ATB Helical LSD differential for the MGB V8 and MGC. A direct replacement for the standard open differential, the Quaife ATB Helical LSD differential transforms your car’s performance. Unlike a conventional plate-style limited slip... $988.32 Add to Cart