Well they are now installed.I couldn't do it myself because I couldn't get the Driveshaft pryed out. I was pissed because I had to spend 250 on installation. But afterward it was amazing. It is still totally drivable I feel no difference in normal driving but when I punch it or let out the clutch quickly I can totally feel it. I accellerate much fast going through the rev range and when I let out the clutch instead of hearing it slide and the car picks up I feel a jerk and the car slingshots forward. It is awesome.