For Sale SMB 3 inch Stainless steel Metallic Substrate Catalytic Converter and mid pipe.
Almost brand new. Used for less than 1 month. Includes bolts and fits directly onto the car.
This is the item.
http://www.smb.net.au/fullexhaustsystems-mazdarx7.htm
Metallic Substrate cats are very high flowing and are not cheap (Knightsports ones are > $1500!). Here are some test results from the SMB site.
Catco 3" in 3" out 299 CFM
Carsound 3" in 3" out 299 CFM
Metallic substrate 3" in 3" out 408 CFM = 36% increase if flow rate
http://www.smb.net.au/catalyticconverters.htm
Costs $617 Will sell for $500
Located In Sydney, But will ship at buyers expense.
Pm me if interested.