1990 Eclipse 1.8L

I have a 1990 Eclipse GS with a 1.8L engine in it. I should of gotten a 2.0-T but i couldnt afford it at the time...so i am trying to make due with what i have. what are some good modifications i can do to my 1.8L. i have read alot that there is really not much you can do to a 1.8L. i also read that they dont even make headers for a 1.8L.

Can you put a turbo in it?
What is the best intake?
What are some good websites for my 90 eclipse?

Thanks alot,
Joe

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