A  complete new 3HA alloy cased differential  unit for independent rear suspension on some Bristol engined specials, Lotus race & early road cars and ?, more details here

Could also be used in Post War Feltham Lagonda's

Photo is actually a computer 3D drawing of the casing & assemblies - no diff unt, CWP etc, fitted.

various ratios available from 3.08:1:to 5.38:1