CB750 front caliper fitment

Does anyone know if the mid 70's cb750K caliper and caliper arm fit a 1978K fork?

Basically are all the "T" style bracket mounting holes the same? I know the widths of the caliper arm vary from the 1973-76 and the 77-78 so the is probably why the parts numbers dont match up correctly.

Post a picture of fork leg.
The 77/78 was the year they fitted different forks and brakes to F1/F2 as a stopgap before the dohc motors were in full production
Some K's had the 'small' caliper but I think thats pretty rare and not the same as K1/K2