If the bottom hose part thingie is out of round, it's pretty much gonna leak unless you take it to a radiator shop and have a new hose thingie put on. My stock EF radiator was like that, and I ended up just putting a 92-00 Civic radiator in. Even if you try to straighten it out, it still isn't gonna seal right. At least, it wouldn't for me. As far as an integra radiator, I tried that too and couldn't get it to fit. It's a tiny bit too wide, and about an inch too tall. I suppose if you hack stuff up it'd fit, but wouldn't look all that great. Not worth it IMO, especially for a radiator.