Ya if your doing a tlok its not bad at all. However if you are swapping gears its a lil more difficult with the setting up.
I wouldnt say my father is a mechanical genius but hes getting better.

You could actually do a tlok swap in a day. Right at home. Just make sure to have jackstands.
Jack the car up, take wheels and calipers off both sides. Proceed to take off the differential cover. WARNING fluid will come out. so have something to catch it with. Once you get the cover open, you will need to remove the c-clips on the axle ends. I usually just push them off with a screwdriver. Slide the axles out a lil. The differential in the rear has a metal pin that runs through the middle. At one end of the pin is a small bolt 7mm i think. Take out the bolt and the push the center pin out!
Then to get the old differential out u will need to take off the caps on the sides. Then it should come right out. Then you'll need to take off the ring gear and put it on the new tlok and then just button it all back up.
Its a bit vague but u should get the jist once you start.