You might also want to check with one of the guys like Alex Lipowich. I'm not sure if he is still doing it, but he used to have cargo containers shipped over form Europe. He was importing euro motors and euro 6 speed transmissions.
http://www.abloriginalparts.com/ He is a BMWCCA racer, and most of those guys are willing to help out a fellow racer. At least worth a shot to ask.