Unless the SOHC and DOHC motors use the same carburetors, you might have a problem here. The jets listed are for 72 through 78. These might not work for your 1981 motor.
TOOLS may have a better feel for this.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.