Suit factory 28 spline axles.
Suit custom axles.
Helical LSD (may require pinion mods with early gearsets).
Mini spool which can be fitted to an open carrier.
Open 3-series carrier pre-fitted with mini spool ready to fit.
Standard 3-series open carrier in excellent condition.
Full spool to suit 3 series gearset in either 28 or 31 spline.