Mia13..... y are you so mad for?
Op has a problem that he obviously doesn't know much about...he's asking for help on his favorite forum....
My advice....rebuild if you can do it yourself which I doubt because you wouldn't post this.....so just get another ka and do the swap yourself if your tight on money....its really easy....or if you have money take it to a shop....check the ones on here...festival...Jacksons.....
If you do it yourself...a couple things to do....change water pump....change front and rear main seals...thermostat...
Good luck and keep us updated. If you have problems just post it, you'll get a lot of stupid replys buy all you need is that one good one