Can Anyone Help?

Hey everybody, just became a member and I have a few questions. First, I have a 2002 Civic EX Sedan and I wanted to get some rims for it but I can't find anything that I like. Does anyone have any suggestions and where I can get them? Another thing is that the Civic only has 127HP and I wanted to boost that a bit. How much extra HP could I get if I changed the intake, exhaust, and so on. Any help would be greatly appreciated. Thanks in advance!