Hi, more specifically, what are you looking for? A US vehicle you can import or JDM? Are you looking for turbo, N/A, swapped engine? You may have luck on scoobynet.com if you'd like to import closer to home.
You really want to find a company that does this, instead of just an individual.
Joe Stommert who is selling his 2 door Impreza isn't going to know the import export laws, and have contacts with shipping agencies, and etc. Your car may be stuck in customs for years due to mis-filled out paperwork.
You right, but i need to find first a car before contacting a company. For exemple if the car would be near Montréal i wouldn't need it because i have family living there.
I have done it with my Datsun 240z it came from Arizona.