No matter the condition of your 1978 Cutlass, OPGI has the Service Manuals you need to enhance your style and express your passion. We currently carry eighteen Service Manuals to choose from for your 1978 Cutlass, and our Price Match Guaranteed prices range from as little as $24.99 up to $39.99. OPGI offers trusted brands like RESTOPARTS, providing you with a wide selection of high-quality items to choose from. With OPGI's 45-day return policy and thousands of customer reviews, you can shop with the utmost confidence. Enjoy your items delivered directly to your home, or visit our sunny Southern California Showroom & Warehouse to check out our Service Manuals in person.