I got my diff done through a mate and it owes me bout a grand all up but thats including buying the diff from a wrecker then getting it shortened.Axels are 28's and have been resplined and studded too datsun stud pattern im running 4.11lsd brand new with new crown wheel and pinion and axel bearings.Shop around when you have yours done cause my mate reckons if it was for anyone else it would owe them bout twice as much.But at leat il know i wont break it in a hurry