as i see the structure of you itbs kind like mine. but i took a different direction. i have a set of CBR1000RR(42mm). i picked up a D15b2 intake cause it doesn't have the injector sockets on the flange and hacked the runneres. i found some aluminum conduite from work which has a 42mm ID chopped it up. i then oval one side wuth a vice and left the other side towards the itm side. i send my itbs and the parts to a member here to have it welded.