XJ Axle Codes

Can anyone convert the axle codes I got off the front and rear diffs. of my XJ?

Rear
42968
153 7
02-24-87

Front
40869
082 7
REV-C
7-24-85

I was told these cods will tell my diff. ratio and axle size. Front is a D30 I think. No clue what the rear is.

There is a website that has descriptions of your axles by the differential covers.

I have a pdf of the covers but can not get it to display in this response. If you send me your e-mail address, I'll send the pdf to you and you should be able to determine your differentials/axles from the pictures.

Jeff-97XJ

You got a PM