I'm interested in buying some HFCs, particularly Berks, but I can only find metallic for the 07s. I'm guessing they don't offer ceramic HFCs. I want ceramic cats because I don't want to change the exhaust note too much and I want increase the loudness as little as possible. Will ceramic ones be available in the future or should I just go ahead and go with metallic? Is there a significant difference between the two? Thanks.

 

Fast Intentions has ceramic HFCs:

http://www.fastintentions.com/exhaus...ti_default.htm

 

Bump!

 

I was looking at pictures of the 07-08 350z Stillen HFC, it appears to be ceramic core

 

Crawford also has ceramic cats for the HR.