same problem here when i ordered my Mugen Twinloop for my Dc2 (years ago now)
supplier was a champ (cheers yonas) and postage was fast as hell

but i did the research to confirm the fitment before i bought it - knowing full well that because it was JDM it wouldnt simply 'bolt up' to AUDM
i had to order JDM fitted headers and cat to mate the exhaust to my B18c