Do I have to change carrier in D44

[98XJ]

when going from 3.07 to 4.09 just like in other axles ?
TIA

[LRRH]

yup.

AFAIK 373 is the biggest you can go in the small carrier.

[CRASH]

Yes, unless you use a thick ring gear set, available from most manufacturers for a 4.10 gear.

CRASH