I put Stoptech's on myself. It's not very hard and took about 2 1/2 hours. Mine were mislabeled: left was market right but I quickly figured it out. I called Stoptech and they were going to check their inventory and correct the labeling mistake. The brakes definitely feel crisper. It's more noticable on the track under repeated hard braking but not so much on the street. It's a fairly cheap performance mod that's pretty easy to do yourself and with good results. If you do it yourself, loosely connect both ends and the support bolt before tightening any of them and then bleed from the right rear, inside then outside, then left rear, right front, left front in that order. Drive a few miles, brake hard a few time and recheck for leaks.