If you choose the “forza motorsport” style rear bumper or the engine hood, there is no difference betweet the factory rear bumper or engine hood with the aftermarket part, normally you get a red loop somewhere on the rear bumper (flexible or solid) which is missing at this car and with the after market engine hood variant you get two additional locks which are also not shown for that specific part and car.
Only the specs are changing, not the visuals.