Ebay should have plenty of AEM intakes, just make sure it's SHORT RAM, not COLD AIR. You dont want to have to worry about hydrolocking, although it is possible w/ short ram, but not nearly as much.

The other two products, all you have to do is google them. I cant remember any sites off the top of my head, but if you put in google for example "Civic DC Header" im positive you will get plenty of sites. Same thing with the Apex'i exhaust. let me know if you need anything else.