Importing cars from the states

My son is going to the states next year,and if he finds a camaro or mustang that he likes he wants to bring it home.  So who is the best person/company to talk to and what are the pitfalls.

This is why he want's to buy over there.
a 2010/2011 $25 to 35 k for the camaro
or a 2011/2012 $15 to 25 k for the stang
Oh you can buy a real chev comaboor for 4000

UNDERSTEER is when you hit the wall with the front of the car. OVERSTEER is when you hit the wall with the rear. HORSEPOWER is how fast you hit the wall. TORQUE is how far you take the wall with you.