im on ebay and the description for this gasket kit says
Fits All Models Including:
CB 750 ; 1979, 1980, 1981, 1982, 1983
CB 750 Custom ; 1980, 1981, 1982
CB 750F ; 1979, 1980
CB 750F Supersport ; 1981, 1982
CB 750K ; 1979, 1980, 1981, 1982
CB 750L ; 1979, 1980, 1981
CB 750 Nighthawk ; 1982...