I cant see much point in swapping at all to be honest. You wont gain anything from it. If you're going to swap rads for a greater coling capacity then get a larger core ally rad.
The standard b series rad can take some abuse and handle pretty high temps so i wouldnt go with the idea mate. Obviously if your racing or live in vtec 24/7 then could be a possibility
I am installing one to get better cooling.
you can also use a duel core radiator from Mishimoto or Koyo., this way you do not need to relocate your rad brackets.