So I have a opportunity to get the hood, fenders, rockers, grille, and grill trim from a rcf for super cheap I’m wondering is it possible to put the rcf front end on the IS cost not prohibiting or even graph just the hood and the fenders onto the car cause I really love how aggressive that all looks and no company’s make hoods or fenders like the rcf ones. Besides seibon but I don’t want seibon

Would be challenging since you would need front bumper, headlights, daylights, grille components, under carrier front bumper, crash bar, hood latch, maybe RCF radiator components, front wheel underliner, new vents, radiator cover, and probably a few more items.
Then you would have to figure out how to wire the new headlights and Daylights, most likely they won’t be plug and play.
IT WOULD BE VERY COSTLY! Unless you can get all these parts from the same source you’re getting the hood, and fenders.
I did a 2017+ facelift conversion on my 2014 is and it turned out very expensive because of all the “little parts” I had to buy besides just the bumper, grille and headlights.
Hope that helps give you an idea.

Thanks for the input if anything I want to get the hood vent and fender vents molded into mine I just love that look so much I wish there were more aftermarket sources for those.