They should help you decide whether the person doing the service is doing the right amount of work while he has the car torn apart because if you are going to pay for labor you might as well do everything while you are in there. Depending on your mileage make a decision what needs to be done. The second one is the Kit that can be ordered from Concept Z Performance and includes everything that should be done at the 120k interval. He also has one for 60k that does not include a few of the items and is slightly cheaper. Good Luck