Buy your radiator here at www.radiatorbarn.com. your oem is plastic / aluminum casing and tend to leak eventually. You can get an all metal heavy duty raditor $125 shipped. I highly recommend it, all of my friends / family have used it and have been successful thus far. While your down there, You can fully flush your fluid, replace needed hoses and maybe your thermostat.

here's your Diy.
http://www.team-integra.net/sections...?ArticleID=520