A bit of a hijack here, but on the same issue.

I'm putting a ca18det into my ke20, and i'm contemplating what to do about a radiator. The choice being fit something newer (eg x3 excel, a ca18 one, or something bigger like an r32) or to recore the stock one. I would assume that getting a stock radiator triple cored would be an expensive exercise? Does the cost outweigh the benefit of it bolting in? And more importantly, would it be up to the task? I'll be running around 140-150rwkw to begin with, with a mind to ending up with around 200..