My heavy boomerang

My heavy boomerang.
Options:
-Dirt burners Front Shock;
-Dirt burners Rear Shock;
-You-G rear damper tower;
-Dirt burners Rear Shock(Extra, much more than enough);
-Dirt burners Rear Stabilizer;
-Dirt burners Siderguard,
-Panoria(don't know the exact spelling) Torque Splitter;
-Dirt burners battery lid aluminium lock pin;
-Tamiya 01 motor;
-Winger body.

GOOD!! NICE CAR!!

YOUR CAR ALSO FROM YAHOO JAPAN? THE STYLE OF SHELL IS DIFFERENT.

As I know, it is a shell for Boomerang.  Its name is "Winger".  It was released in 1987.  A comics magazine called "Boom" organised a competition for boomerang body design.  It was the winning design and Tamiya produced it.  It was said to improve the aerodynamics of boomerang but  god knows.  Correct me If I was wrong.
When I saw it in hobby store when I was young, I was wondering if it could fit my old boomerang(I have an old one and still own it).
It said "for boomerang" in japanese on the box.  However, I was too shy to ask when I was young and I missed the chance.   
It looks like kyosho Salute and it is really cool.
I got another painted black one.
It appears in Yahoo japan sometimes.  NIB or painted but I don't know the colour of the original deisgn. (As other C-hing says "Natural").  Please tell me if anyone knows.

By the way, the famous model manufacurer "Volks" produce limited 3000 pieces body for Boomerang.  Anyone has idea? (or can post a photo to share).  I saw in yahoo japan option and missed it before I realised it was for Boomerang.

http://page18.auctions.yahoo.co.jp/jp/auction/w19886054
More winger photos in this ended auction.

my last gallop with all dirt burners option weight close to 4.8kg (15 years before), how about yours??
very nice collection, thanks sharing