High flow cat is a direct replacment for the OEM cat. avalable in 2"  2.25" and 2.5".
Available for the NA6 (1.6L) and the NA8 (1.8L)
Gaskets and hardware not included. I'm a small welding shop and don't have any special hookups on gaskets unfortunately. 
***international shipping available. Contact me directly for an accurate price with shipping***
Lead time is usually 5-6 weeks