the length your shaft needs to be will be dependent on the height of your Disco, if it's standard height all round as mine is, its a straight swap over shaft, i got mine from Pro Comp in Melbourne-03 8795 7766, spoke with a fella called Henry, $600 delivered to my door. 12 months warranty, the first one i got was actually out of balance, i changed it over to a mates D2 & sure enough the vibration was there at 95kms. Rang Henry & described what was going on & there was another on my doorstep within a day or two. Great guys to deal with. I'm not %100 sure but if your Disco has been lifted, the heights will need to be specified & its possible you might have to have one custom made.
Hope this helps.

