well i finished fitting my lokka today.
it was quite straight forward, these instructions making things very easy, its also quite helpful to know bolt sizes and torque specs straight up.
hardest bit was getting the diff assembly in and out of the truck but i did manage to do it all on my own so its possible, i used 3 jacks and supporting the diff by the x-members sitting on planks of timber while manoeuvring it into position.
i took the truck for a run in 2wd with the hubs locked and at first i couldn't hear the diff clicking (unlocking) it felt completely normal. eventually i did hear the clicking but it was barely noticeable.
i then i took it for a drive on a grassy area and put it into 4hi, i felt no real difference at all compared to normal 4wd, steering felt normal and i couldn't hear any clicking when turning.
steering did self centre pretty quickly when i let go of the wheel.
so i didn't notice any negatives at all.
it will be interesting so see how it goes when i head off road.