If you keep the OEM manifolds with their integral catalsyers, you don't need the big "3rd Cat".

Replace it with a free-flowing 2.5" (63.5mm) diameter 2bular De-Cat Pipe.

A straight swap for the OEM pipe.

Supplied with fitting kit.

All-stainless construction - no mild-steel flange like OEM!

Combine this with the 2bular 6" diameter system and your car will sound like it looks!