While I will admit it takes me longer than 20 min. to do both sides the time extender for me was the replacement of the ball joint. They came out easy enough but because I don't have the tool to press them back in, it took awhile. Give it a few hours with a nap between sides.They aren't terribly difficult, but no one here knows your mechanical ability. I can do both in about 20 minutes with a lift, but I've been doing this a while.