I bought my gears at Mustaing Tuning. I didn't get the install kit -- after talking to my mechanic, he said he could get the parts he needed for less. My car only had 33000 miles on it so didn't need bearings and all. He charged $20-30 for the misc parts so it saved me a little there. Plus you need new gear oil -- $40 for synthetic. Labor was $200. So all tolled, I paid $150 for the gears and about $260 or so for install including parts and labor.