I got one of Nissan Skyline R31 1987 with S30 3.0v6 Engine but its registration expire in 2006 nd car need some head valve work out nice cars but unlucky Qatar Nissan Parts wont help u for spare parts so my beauty is in home sleeping frm past 4years lol anyways if some1 know parts of R31 S30 engine then let me know thanx.