Word on the street is they are a fit. I’m curious if your rotors are different though. Try cross referencing the part numbers on a Kia OEM parts store.
The pads are different. I’ve seen different part numbers between the two models while hunting down EBS pads.
If Kia is like any other Asian car manufacturer, the bigger brakes should bolt right on to the 4 cylinder trims. What you will have to change is the rotors. You won't be able to use the smaller rotors on the bigger calipers. Having said that, I do not have first hand knowledge of this. I'm just going by past experience with same body types where trims came with bigger and smaller brakes.