Stock civic HX, where to go from here?

[acurizo]

I just picked up a 97 civic HX with everything hooked up but the motor. I dont know much about d series engines so I want to know what I can do to tweek some hp out of it. Full swap is not an option. How can I just build on that?

 

[sohcslammer]

Turbo. Nitrous. That's about it.