In order to put a 1/2 size in your going to have to drill out the mounts for the full size (just drill out the spot weld and have it moved to fit and weld back in). and make a custom top strap and your done, Pretty simple! Just use a Alum one for the integra the b18a1 like them more then stock single core. I have done it on 3 of my cars for turbo kits including my prelude, it would only cost like 20 bucks for welding if you dont have a friend who will do it for cheap. there have been ALOT of people who have used the cheap alum rads from Ebay and they have worked out well. I use Godspeed and have never had a problem with them...