No matter the condition of your 1978 Cutlass, OPGI has the Exhaust Gaskets & Seals you need to boost performance and get you back on the road. We currently carry four Exhaust Gaskets & Seals to choose from for your 1978 Cutlass, and our Price Match Guaranteed prices range from as little as $23.99 up to $156.99. OPGI offers Edelbrock plus one other trusted brands of Exhaust Gaskets & Seals for your 1978 Cutlass, 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 Gaskets & Seals in person.