2.5 ZZP Stainless Steel Catback Exhaust System for 04-08 Pontiac Grand Prix's w/ dual exhaust. It's been on my 05 GTP for 2 years and its been a great performance exhaust system. Have had many compliments on the sound. I removed it from the car however, to put the original exhaust on to sell my GTP.The item "04-08 Pontiac Grand Prix 2.5 ZZP Catback Exhaust System" is in sale since Friday, April 21, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Systems". The seller is "burtonn_aviation*" and is located in Butler, Pennsylvania. This item can't be shipped, the buyer must pick up the item.