"Original Mugen RR body kit", thats a bit hilarious.
1) You can't buy any Mugen RR part unless you own a Mugen RR, which you clearly dont
2) Mugen RR parts aren't made of fiber glass
3) A Mugen RR replacement bumper costs over YEN 250,000 last time I checked
4) The price of the entire bodykit from the very shop you bought this from was 36,000 last time I checked. I didn't buy it from him because
a) It was of poor quality
b) The shop owner is a stupid dirtbag
Its understandable everyone loves the stuff they put on their cars but kindly refrain from over glorifying it by calling it a genuine "Mugen RR" part.
Good effort anyway.