im not trying to sound stupid but what does bulding mean? ive never heard of this word b4. also i read ur post like 3 times and i dont seem 2 understand what ur saying or asking here. ive replaced my raditor with a aftermarket raditor. its not a better cooling raditor its just a regular raditor that is way cheaper n price compared 2 the dealer. anyways, even after i changed raditors my car would still get hot and the reason 4 that was because of my thermostat. once i changed that it was all good. if ur having heat problems then it could u thermostat is out.