15k is ok^^
you pay here in germany 17-20k for a gtr in a very good shape! the biggest problem here are parts and lights(for lhd traffic) but why buying a car like that? buy a 71 or 71 skyline its legal to import in the isa and its most rare!
a friend of me have a mitsubishi evo 5 rhd i found its not really bad to drive that! the first 2 hours was hard for me when i turned i pushed many times the windshield wiper ^^ hahahahahaha
or its funny when you drive into the drive in at any fastfood restaurant^^ or you drive in a car park for getting a ticket^^ my friend have one of these for the tickets
http://www.shoppingpeople.de/images/product_images/popup_images/21791_0.jpeg