I just put a set of the LoadLifter 5000 Ultimates on a 2011 F250. I can assure you, it's not a 2 or 3 hour job. I very pleased with the results after I finished it, but plan on at least 5 to 6 hours. Everyone works at a different pace, has different tools, and some, like me, didn't have a lift to use, so it was all done in the driveway rolling in and out on a creeper. I left the tires on the vehicle and on the ground, and raised the rear of the truck up with a floor jack under the Class V hitch, then put some jack stands under the frame and let the floor jack back down so that the frame rested on the jack stands. I don't know about the F150, but I also read that it was recommended to remove the spare tire/wheel out from under the truck.....I didn't.....at least for a while. Big mistake! Removing the spare gives you a LOT more room under the truck and I cost myself a few hours fighting it. (They say you get smarter the older you get, I guess I'm a slow learner
).