Perfect Balance

I have a 1999 Civic DX hatchback, and I was told I could put a EX intake manifold on it and get a little power boost from that. I can get a intake manifold for free I think, but after looking around, it seems to me I also need the head from an EX too? Will the EX intake manifold bolt up to the DX head?

Also, what other stock parts can I interchange with my engine to get a little power out of it? I don't really want performance parts, since I plan to swap the engine later. I think a EX exhaust manifold and ECU should also work if my sources were correct.