No matter the condition of your 1965 GTO, OPGI has the Exhaust Systems & Kits you need to boost performance and get you back on the road. We currently carry 43 Exhaust Systems & Kits to choose from for your 1965 GTO, and our Price Match Guaranteed prices range from as little as $18.99 up to $1,142.99. OPGI offers Pypes plus two other trusted brands of Exhaust Systems & Kits for your 1965 GTO, to help you find quality parts you can rely on. With OPGI's 45-day return policy and thousands of customer reviews, you can shop with the utmost confidence. Enjoy parts delivered directly to your home, or visit our sunny Southern California Showroom & Warehouse to check out our Exhaust Systems & Kits in person.