if it's whining it's most defo the crownwheel and pinion

it' not worth changing just that you might aswell do the whole diff

stuff like bearings/seals full over haul


I'm sure that JC Motorsport has 2wd diffs on the shelf ready to go you could always part ex your one with him

he also has got 2wd and 4wd cossie gearboxes on the shelf ready for exchange

Cheers marco