Hi there.
 

I've got a 1998 eclipse rs 2.0 non-turbo
I'm getting the head gasket replaced, and a new fuel filter. I just want to know as much as I can about this engine so I can keep it in great condition and even make it better and faster. I know the transmission is going out, it is a auto. And I was wondering what other engines could I put into this and how to go about it.
thanks