I was looking into underdrive pulleys and a aftermarket header for the G6
ecotec, and was wondering if anyone has tried them, or know if they will even fit on the G6?
http://www.obxracingsports.com/products.php?pk=1507
http://mrzperformance.vstore.ca/product_info.php/products_id/144

The header requires some fabrication on the downpipe to fit, idk if the pulley link is broken.