2ZZ and 1ZZ header is available.

[d_m_kolb]

Toyota Celica GT-S / Matrix XR-S / Pontiac Vibe Vibe GT Performance HeaderDyno tested and proven the Celica GT-S / Matrix XR-S/ Pontiac Vibe, Vibe GT header can improve performance by up-to 12.9WHP (with the combination of an aftermarket air intake and Apexi S-Afc/HKS S-Afr), and 1.9 ft-lbs of Torque increase over stock.This header is designed out of mild steel and is Ceramic Coated and Polished and is a direct stock replacement. This product is a special order and usually ships in 1-2 weeks after receipt of order.$360.00 http://www.aftermarketsuperstore.com Once at the site, click on Headers then Toyota and you'll see the headers.

[d_m_kolb]

Anyone that was thinking of installing a header on there 2ZZ probably shouldn't. The reason I say this is because I have been talking to a few Matrix XRS owners who have bought and installed this header on there Vehicles and none of them have had anything good to say about it.Most say that the vehicle feels like it's lost some power and when the lift takes place it doesn't kick in as hard. They are all going back with there stock exhaust manifold.The stock exhaust manifold looks very much like a aftermarket header and is very well designed for high RPM operation. It looks nothing like a normal low performance stock cast iron exhaust manifold. Looks like Toyota did a great job when they designed the stock unit.