These are a direct replacement for the OEM catalytic converters on a 4.3L V8 Vantage and pre-MY10.5 V8 Vantage (which uses the same exhaust system as the 4.3L V8 Vantage).
They can also fit the post-MY10.5 V8 Vantage, but will require a set of GMR headers or VelocityAP headers.
This product ships directly from the manufacturer. Delivery times are based on the manufacturer’s inventory availability. Please contact me prior to placing an order if you want me to check availability.