True cost of Lokka Diff Locks & easy to fit?

To all that are considering this option. Note the following that may help with a decision.

1) Not easy to fit, a good mechanic took 8.5hrs for my Holden rodeo 2007. They required some precision machining of spaces to get the require tollarances. Do not attempt this at home if you can not perform these functions. It leads me to believe there may be quite a few of these fitted that are not within the required tolarances for the diff they are in.
2) Free wheeling hubs need to be seriously considered due to the way the diff workings change after fittment of the lokka for on the fly shift models.
True cost $610 delivered. $450 fitted (great price at 8.5hrs to fit) and $290 fitted for new hubs. $1350 being the true cost of this item fitted ready to go. Second hand hubs would reduce this cost if you can find them, I could not.
Good things.
1)All Ra Rodeo, Jackeroo and AVM433 17 Spline Free Wheel hubs will fit the latest Rodeo or any RA.
2)Free wheeling hubs stops the drag,wear and tear on all the turning bits - but make sure you give them a run occasionaly.
3)They work great and have a 3year warrenty. If you drive your car soft, I see no reason they will not last. I have found little difference with the steering, but yet to do the serious stuff.

Consider the above cost against the Air Lokker where there is no real need for Free Wheeling Hubs.

Hope this all helps to those that are looking. Contact me if you need more info while it is still fresh in the mind. Cheers Tony