Yes,i thought about that too. But,just like you i'm not 100% sure...
ok, I just compared a Tarozzi fork brace to K1 forks and the lip is the same
lol, not often that I have parts in question in the same location as internet access.
Also, Tarrozi part number for sohc 750f 1975-6 is 22-0037 apparently nla, at least from Fast From the Past. There may be a different part number that still fits and functions for say...750F 77/78 or cb550. I dunno...