I have the same year and same model. However, I haven't had the opportunity to replace the N. shocks.

From what I understand from this board, you have two choices.

1. Replace the old N. shocks with new ones. There is one outfit (mail order that sells them for about 1/2 the dealer price. I believe this is www.shox.com. I am not positive.

2. Use any regular shocks of your choice. But you must first replace the existing springs with standard or sports springs.

My experience: I don't know what type of springs I have. I was told my car was originally equipped with Nivomats. One time I replace the old shocks (mine looked like regular shocks) with ordinary shocks and they work fine without any problem. Again, in your case you definitely have N. shocks and should go with one of the two choices as described.