PK996C2

One new, one used. Both part no. 996.113.021.97. $ 1,350 for the new one, $ 675 the old one. Came off of a 2004 996 GT3. I believe, but am not certain, that it applies to the 997 GT3 as well. Check with your dealer. Note: "Due to federal regulations I am not selling this for use on motor vehicles." There, you all know why I said that.

10 GT3

Wrong forum. 997's use completely different cats. I would suggest you put them up on the 996 forum. 996 GT3 and Carreras use the same cats.