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			Looks like the factory JDM cooler is like 200 bucks, not totally point and play, and not all that effective. Seems like just grabbing a decent core from Summit and some good rubber hose is the way to go. 
 A quick google search seems to suggest -6AN or 3/8" ID hose is the size to use.  Just need to pick a core with that size inlet/outlet and hang it out in front of the radiator. Then plumb the hose between the return line and reservoir. Looks like there are plenty of tips on nasioc.
 
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