does mugen have a web site?
 

I recently bought a set of door sills which arrived in the mail today problem is the set includes 2 co-drivers and no driver. I would like to contact the manufacturer to see about trading it out.

TIA,
MJ

mugen-power.com is the japanese site.

the english site English has been under construction for ages

you might get better joy from the shop you got them from..

some on ebay are mugen 'Style' or copies and are not made by mugen

You can go to King Motorsports website. They may have a direct contact with them.
King Motorsports Unlimited, Inc.