Performance Clinic is your One-Stop Headquarters for everything from basic rebuilds to all-out performance and racing engines, including Marine Applications and Tow Rigs. Parts, supplies, machine shop services and more!. * Most Major Auto & light Diesel Engines * Full machine shop services * Cylinder heads,short blocks,complete engines * Professional onsite installation * Remanufactured Engines & Cylinder Heads * Remanufactured Gas and Light Diesel Engines