Picture of the hubs is no use as I believe them to have been changed to suit 24spline shafts (for the locker).
The slotted stub axles are the earlier ones, and I think they changed around 300tdi to the ones with a flat. (this has the slots)
Length of diff studs is down to age, I want to say td5 went to all the same length but I could be wrong. The two either side of the 3 o'clock and 9 o'clock positions are shorter on earlier ones (which mine were), because of the thinner casting of the diff casing.
Brakes are single line, and I haven't seen any evidence of ABS.
Sorry to be a pain James .
Someone must have some reference table to look up the axle number