Next some questions:
1. What year? its a 2003
2. What are you replacing? CR220? CDR23?, probably not PCMx. CDR23 (that's why i got a new amp as well)
3. What is the stock speaker config? Any existing amp? How many speakers? stock
4. Where did you get the 2din bezel and harness adapter (you aren't planning on splicing, are you?) - I've been waiting on Eurospeed -- they are out of the kits right now.
I don't have any specific knowledge of the 996, and from what I found so far, it looks like the console and bezel is completely different. So I can't give you specific wire locations. Have