Whats the difference

Can anybody help me with this question. I have a 93 318I European Spec, and I was wondering whats the difference between the European Spec and the US Spec for this car. I am living in Europe right now, but will be back in the States in about a year, and I am trying to get the car converted. Again, if anyone can help thanks alot.

i have read many things on importing, and from what i hear it is a pain in the ass. unless ure bimmer is really a exotic keeper, they always recommend that you just sell your bimmer, then buy another one once you get back. . . there are many 318's out there ready to be placed in a caring bimmer owners care. . .;)