These are the flywheel to crankshaft bolts for holding the flywheel on. They're the proper shouldered style bolt. They measure 7/16 inch diameter with a 20 threads per inch th... For 1938 1939 1940 1941 1942 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 Cars and Trucks

These are the bolts for holding the pressure plate to the flywheel. They are the proper shouldered style that measure 3/8 inch diameter with a 16 threads per inch thread count... For 1938 1939 1940 1941 1942 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 Cars and Trucks