I don't see why any parts from other models won't fit. All clios have the same shell (obviousely ph1 and 2 are slightly different at the front) so an RS Grille should fit... maybe give it another go, or take the original off, and compare it with the RS next to each other to be able to see any differences.
Projectors should fit too. Renault, in fact any car dealer, isnt going to change things like that between slightly different versions of the same model of car. It doesnt really make financial sense. They already use french wipers, and the bulk head, just has a plate welded on where the left hand drive stuff would come through. So they will all basically be the same and therefore should fit.