im really sorry my friend, but i do not think you will find a skyline for your buget.
i really think you should save more, or get one wen u r older.
you dont want to buy a shit one that you will spend more fixing it. might end up spending 10k on it, just to make it run.
driving a skyline isnt just having one. ive had few skylines since i was 18 and trust me, they are not cheap to run.i have spent over $30k on my car, im 22 now, and trust i wish i never like them.
good luck, i wish all the best. who knows someone out there might just have one for you.
good luck kid
jeff
if you have any questions abou skylines, do not hesitate to pm me, and ill be happy to help you