Product review (5 stars): Easy to install and test. Everything needed was included.
Got a new gas range direct from Maytag via workplace purchase program, but I had to install myself. I had a plumber put in a new, updated valve and put a cap on the line before it was arranged for delivery. I picked up this kit, removed the cap, and installed it easily. Instructions are clear and there are also simple videos on youtube for installation. However, you can easily pick one of these up and have a plumber come out to complete the job, too, if you're not comfortable working with gas. They'll probably charge a 1-hour minimum, but at least you won't have the parts markup!