what are is a good header for the street?

 

Please search.

 

the one you have now

 

Here's some design info for an exhaust system for your car, that will give you and idea about pipe sizes, header designs, brands, etc.

http://www.team-integra.net/sections...p?ArticleID=48
http://www.team-integra.net/sections...?ArticleID=797

For street use you're looking at good midrange torque, probably a 2.25" tube dia, 4-2-1 header, etc - see articles.