mk 3 transit axle ratio code

[plumberdave]

hi having snapped my halfshaft and exploded my diff im looking for a mk3 axle H (square section ) i know my diff now has 4.11 ratio but the plate in passenger foot well is stamped rear axle type B ratio B im just wondering what the B ratio is as i have found a rear axle still on a van and was going to look at that plate to see the stamping
Have searched all over here but can only see the vin identification for mk 4/5 and there is no mention of a B ratio
my van is the MK3 fitted with cosworth yb engine and t5 gearbox
thanks need to get it running for transitmania!!!!