It really is worth it. The KAAZ that is in my car makes all the difference in the world. Lots of freakin traction. And another plus is when people get in your car and ask what is wrong with it you get to tell them that you paid $900 for your car to make that noise. From what I have read these are really nice diffs and totally worth the money. It is something that you are eventually going to want to have, might as well get a good price.