i bought the quaife beforehand and brought it to them. my original plan was to have hybrid install it, but don was too booked up to get it done before a track day/lapping event i participated in. so i decided to try out the dealer and i was very happy with their work. they had their best technician work on the car and its worked flawlessly ever sinse. and btw…this was before TRD offered a diff, infact i was on quaife’s waiting list and was one of the first to receive the LSD when they came out with it. so it wasnt a common practice at the toyota dealer when i had the work done. but they were still eager to take on the challenge and did a great job.