Well, yes.
Move everything from the head interface to and including the air plenum between the two bikes.
All these parts are different between models. And, you lose the bar mounted choke operation.
There is a long, long list of differences.
Is there any advantages of 550f carbs compared to 550k carbs?
The F carbs have screw in slow jets, 77-78K carbs have Press ins.
What are your goals?
The venturi diameters and identical; 22mm.
Cheers,